Category Archives: watches

Do You Know The Major Misunderstandings Of Watch Maintenance? Moderator Personal Test Tell You

The forum has not had a comprehensive, correct and detailed maintenance post. I often see only a few pictures of the movement, there is no maintenance explanation of the text. It knows nothing about the technology, equipment, oil products, operating procedures, testing methods, and venues behind it. There are also some misleading views of table friends over maintenance, consumption. As a moderator, I am deeply worried.
    In this regard, after the Spring Festival, I had an idea. I took a watch that I should maintain and entrusted my friend Mr. Guo Ming to do a maintenance. The whole process was filmed and accompanied by textual explanations. Some wrong maintenance ideas were corrected and written. An article published here. The purpose is to let more watch friends understand the knowledge behind the watch, use it more reasonably, and maintain their love watch. At the same time avoid unnecessary losses.
    Lao Guo was preparing his work for the Basel watch exhibition at that time. There was a lot of work to do, and he had to participate in the defense of the Swiss Association of Independent Watchmakers, so we agreed to do this work after returning to China. Later, the watch friends all knew that Lao Guo successfully became an alternate member of the Independent Watchmakers Association, and his work was also affirmed and encouraged by many masters.
    This time I took out an old IWC Portofino watch, which I bought at the Beijing IWC flagship store in January 2010. It has been more than seven years since then and has been magnetized once. During this period, she was more careful and did not perform maintenance. Due to the large number of watches, the real time for this watch is more than 3 years, and the rest of the time lies in the watch box, hand-winding once a month, walking.

When receiving the watch, Lao Guo was taking a class. As a serious and responsible watch teacher, the daily teaching tasks were still arduous and hard. Preparation of lessons, lesson plans, teaching research, lectures, daily assignments, examinations, scoring, practical operations, etc. I know this very well. In addition, as an independent watchmaker, Lao Guo also needs to complete a series of research and development and watchmaking work. He has not had time to maintain and maintain this watch, and only recently took time out.

This time I sent two watches, IWC and Seagull timing. Due to working hours, only the maintenance process of IWC is described here.
The straps of the two watches are not the original ones. I changed the crocodile leather strap and pin buckle of Beijing Watch Factory, which is more comfortable. The seagull watch’s folding buckle leather strap is really uncomfortable. Change to another strap.

The following is the maintenance process, which is operated and explained by Mr. Guo himself

First of all, I checked the appearance details of the watch. I usually wear the watch more carefully. The case and back cover have a small amount of normal use marks, and there are dust and dirt between the lugs. Teacher Guo checked very carefully.

In fact, the hand time is three or four years, and there is no problem, just a comprehensive maintenance is enough, so after demagnetization, test the various data on the school meter and register it. Then open the back cover to continue the inspection and found a small amount of dirt and rust.

Next, remove the ETA2892-A2 movement from the case, and perform a comprehensive disassembly procedure of the movement parts. The dial and hands are placed in a separately closed dial base and a dust-proof glass cover to avoid external dust interference.

While disassembling all the movement parts, complete a careful inspection of each part to see if there are rusted and worn parts. If necessary, this process must be carefully checked with the help of a microscope. At the same time, this process requires patience and takes a long time, which is often easy to overlook.
   It should also be pointed out that the clockwork box of modern brand watches (except antique clocks), if there is no water rust, wear, etc. or the clockwork exceeds the service life, the clockwork in the clockwork box usually does not need to be taken out for cleaning . Many brands of watches are not allowed to disassemble and clean the mainspring. If there is a problem with the mainspring, replace the mainspring or the entire mainspring box directly.
   It was found that many maintenance personnel in the forum removed the clockwork for cleaning. I hope to draw attention to the fact that no problem with the washing of the mainspring will increase the power output. The multiple washing and installation of the mainspring will only damage the stability of the power output, which is why many brands do not allow the mainspring to be washed. This issue can be written separately in detail later.

Checking movement parts with a microscope

Next, the shell part was processed first, and since I wanted to keep traces of use, there was no sanding.

Therefore, using a high-temperature and high-pressure steam cleaning machine to clean the casing, some greasy or rusty parts can also be pre-washed at high temperature to soften greasy dirt. Then put the shell part into the ultrasonic wave for further cleaning, and finally dry it on the dryer.

Next, it is time to clean the various parts of the movement. First, the first pre-washing is performed by manual cleaning, and then the various parts of the movement are loaded into a synthetic plastic basket. The Acs900 full-automatic ultrasonic cleaning machine is used for cleaning again.

At present, high-end top brands usually use ACS900 full-automatic cleaning machines. It should be noted that the cleaning baskets for the movement parts are generally made of metal. In order to minimize the friction between metal cleaning baskets and parts, Teacher Guo uses expensive but softer materials. Synthetic plastic cleaning basket.

Metal basket and synthetic plastic basket

Put each part into the cleaning basket one by one according to a certain specification, then put it into a professional ultrasonic cleaning machine, and clean and dry according to the set program.

After cleaning and drying, remove all cleaned parts, place them in a space with a dust cover, and start installing all the parts. During the installation process, the uninstalled parts must be stored in the dust cover to avoid dust. Dirt enters.

During the installation of the movement, all prescribed procedures such as refueling, adjustment, and testing must be performed. It should be noted that the installation sequence and refueling must be done in accordance with the requirements of the watch brand manufacturer.
   For example, come on, the main system components of the movement must use different watch oils. There are nearly hundreds of oils on clocks, and dozens of them are commonly used. They must be stored at a certain temperature to prevent oil deterioration. . More important is how to use these oils properly. Different brands of movements use different oils, so this is one of the reasons why maintenance personnel need brand maintenance training. Different brands of movements have different maintenance and maintenance practices. Some commonly used watch oils must be stored at a certain temperature.

Teacher Guo will perform some non-proliferation and special lubrication treatments on some movement parts. These operations do not seem to be conspicuous. There is no difference between the same movement and whether it is not made for a short time. After using it for several years, Only then can you discover the advantages of these measures. We will discuss this issue in detail next time.

Complete the procedures for assembly, adjustment, refueling, and inspection of the movement, and start to install dials, pointers, and other appearance parts. It is best to use the matching needle loading core seat and installation tools to assemble these appearance parts. Then install the shell that has been cleaned and dried. These steps need to be done well. A careful and meticulous attitude is the only correct way.

The next step is to detect various data of the watch as a whole, including various data such as the 5-direction swing, polarization, and day difference of the watches T0 and T24. T0 means the clockwork is full, T24 means that after the clockwork has been run for 24 hours, it is necessary to check the various data of each clockwork time period such as T48 for long-powered watches. . The 5 orientations are CH, FH, 6H, 9H, 3H. Some brand movements require 6 or more orientation inspections.

Because there are too many pictures, only three orientations of the data in the case of full bars are selected to explain. Face and face, head down, the swings are: 299, 293, and 271. The 0.0 day difference is: fast 3 seconds, fast 3 seconds, fast 1 second, and then after 24 hours, test the data in different directions again, and compare the detection results between the two to meet the brand data requirements. You can proceed to the next step.

There are two misconceptions to highlight here:

First: Many watch friends still use the daily difference as the sole measure of the quality of the mechanical watch. The daily error is not comfortable for a few seconds, and it is best to have zero error. This kind of viewpoint mentality is not allowed. Senior cousins ​​pay more attention to the stability of the data, such as swing, polarization, and finally the day difference. The daily error of 1 second and the daily error of 10 seconds are not a problem. The important thing is stability.

Second: For example, this IWC, many watch friends also think that when the clockwork is full, the date difference is closer to 0 seconds with a calibration meter, the better, then it is wrong. The structure of the card degree, usually the speed of the day difference will slow down with the decrease of the swing (of course, there will be a situation that the speed will increase with the decrease of the swing, of which we will write another article to discuss). You cannot ensure that the watch is always in a high swing condition 24 hours a day, you must adjust the day difference by a few seconds when the swing is high, to deal with the situation that the watch’s day difference becomes slower when the swing decreases. Therefore, brands that typically use movements such as ETA will require maintenance personnel to adjust the time difference by a few seconds to tens of seconds under high swing conditions. So based on the day difference display of the following 3 pictures, I will adjust it a few seconds faster.

Through the above steps of operation detection, it has fully met the brand’s requirements for various data. Next, there is a deeper detection, which is the detection of automatic winding efficiency.

Some watch friends often reflect that their watches are worn normally during the day, go home and rest at night to remove the watch, wake up the next morning and find that the watch has stopped, which is a typical problem of low automatic winding or automatic winding failure. How can I be sure that the watch is normally qualified after automatic maintenance? Then you need the following automatic winding meter to play.

As for how to test the efficiency of watch winding with this automatic winding-to-table instrument, each brand has its own data requirements. Let’s sell it for the time being. If you have time in the future, write a special article to discuss this topic. In addition, this instrument has a function that can actually simulate the rotation of a human hand to measure the time difference of the watch in the active state, while the watch calibration instrument only detects the time difference of the watch in the static state.

Next, you need to test the waterproof performance of the watch. Before the watch back cover was installed, the waterproof ring has been replaced. Therefore, after the screwed back cover is put into the high-pressure watch waterproof tester to test the waterproof performance of the watch. 3 bar, which is 30 meters of basic life waterproof, but after 5 bar test, still passed the test. If it is not waterproof, you must use a true water tester to perform the test.

Finally, all the procedures are completed and registered. The time has passed 2 weeks from the time the watch was received to the time it was delivered. This time is not fast or slow, and is a suitable cycle. Take photos before leaving for packing. This is the maintenance process of the basic movement. If you encounter a complex movement, more testing steps are required.

The above is the entire maintenance process, rigorous and meticulous, professional and detailed. After Mr. Guo’s explanation, I learned a lot and opened my eyes. Thank you very much Teacher Guo!

This may be the first informative and authentic watch maintenance article. What we see is not only Mr. Guo’s exquisite skills, serious and responsible attitude and strong technical strength, but also a heart of love for watches and an unselfish heart.

After reading the complete maintenance process of this watch, I don’t know how many masters can take a watch so seriously.
There are quite a few things in the society that are just right, intentionally shortening the maintenance cycle, non-proliferation is useless. Once washed in the oil, no qualified, no equipment, no craftsmanship, I hope my tablemates can make a correct judgment through this post. And understand.

thanks for watching

Guo Ming Old Noodle May 21, 2017 in Shanghai, Beijing.

Audemars Piguet And Ic-agency Win In Paris

Audemars Piguet Audemars Piguet got their due in Paris, during the ‘Grand Prix Stratégies Firstluxe.com du luxe 2010’ with its ‘Royal Oak Offshore Grand Prix’ The watch and its partner, IC-Agency, a Swiss company specializing in digital marketing of luxury goods, have won digital marketing awards.

   Founded in 2005, Grand Prix Stratégies du Luxe has been designed for five years to reward those French and international brands for their greatest contribution to the relevance, creativity and integration of their corporate strategy.

   Audemars Piguet loves each other to win the Grand Prix for their limited edition watch ‘Royal Oak Offshore Grand Prix’ launched in March 2010 with IC-Agency for the Formula 1 Bahrain Grand Prix Watch global business activities in the social media of luxury goods and online advertising.
   This was a very successful business event. The entire series was sold at the end of the event and it was a successful online operation. In six weeks, more than 250 million times reached the target audience. With the addition of more than 26,000 Facebook fans to further accelerate the process of dissemination, the brand’s awareness of search engines and controlling purchase costs has been enhanced. This international multi-platform event is supported by IC-Agency The management operation makes good use of the advantages of digital opportunities to meet the wishes of Audemars Piguet.

   David Sadigh, president of IC-Agency, commented: ‘Audemars Piguet is a very high-end, iconic indicator brand, especially active in the digital marketing field. I am 100% for us We are proud of our partnership, and we work together in Le Brassus and Geneva. This award is the best return to Audemars Piguet. ‘

   The 2010 ‘Grand Prix Stratégies Firstluxe.com du luxe’ award was won by Hermès. They are committed to let more people participate in the website of ‘Voyage d’ Hermès Hermes Tour’ perfume.

Panerai Submersible Professional Chronograph-guillaume Néry Edition Guillaume Néry Edition

Panerai is proud to introduce a new professional diving watch, which is the embodiment of bravery and perseverance. This new SUBMERSIBLE professional diving chronograph watch is inspired by Guillaume Néry. The French freediving champion has gained international fame for setting world records and taking stunning underwater photos.

   The new Panerai Submersible professional diving chronograph watch-Guillaume Néryedition Guillaume Nérie edition inspired by the French freediving world-class figures, creating a new legend in mechanical engineering, with outstanding performance, advantages and reliability, outstanding achievements comparable to Néry others. Guillaume Neri was a two-time world champion, breaking four world records of constant weight free diving. The former professional athlete has now become an ocean ambassador, turning his rich journey into the vast ocean into stunning images and films. Panerai creates a new watch that combines superb technical performance and vigorous sports style to pay tribute to Guillaume Neri.

   Panerai’s Submersible professional diving chronograph watch-Guillaume Néryedition is a model of professional diving chronograph watch, water-resistant to about 300 meters (30 bar), equipped with a unidirectional rotating bezel to accurately display the dive time. The white luminous hour markers are in sharp contrast with the finely textured shark gray dial, which allows the wearer to read the time clearly in any light condition, even in the dark environment. The bottom of the case is engraved with the signature of the free diving champion himself, and his amazing record-a 126-meter dive in a single breath.

   The watch is attractive and lightweight, with its titanium case complemented by a bezel decorated with a blue ceramic dial, blue hands and a rubber strap. This precision chronograph is equipped with flyback chronograph and zero-seconds to ensure that the watch can be accurately synchronized when adjusting. Panerai Submersible professional diving chronograph watch-Guillaume Néryedition Guillaume Nérie watch with automatic movement P.9100, power reserve of up to three days. The movement is independently developed by the LaboratoriodiIdee of the Panerai Neuchâtel watchmaking factory, allowing the originality and precision of Panerai watches to be exquisitely blended with each design, tempering the perseverance The character and extraordinary strength.

Panerai SUBMERSIBLE professional diving chronograph Guillaumenéryition

PAM00982 technical parameters

Movement: P.9100 automatic mechanical movement, completely developed by Panerai. It is 13¾ diameter in diameter, 8.15 mm thick, 37 stones, Glucydur® balance wheel, and vibrates 28,800 times per hour. Incabloc® anti-shock device, two barrels.
Functions: hours, minutes, small seconds, dive chronograph, flyback chronograph stopwatch, seconds reset.
Case: 47 mm diameter, titanium. Buttons at 8 and 10 o’clock. Titanium unidirectional rotating bezel with blue ceramic dial. The titanium case back is specially engraved. Titanium crown protection (patented).
Dial: Shark gray dial with luminous dots and scales. The second dial is at 9 o’clock, and the hour dial, central chronograph second and minute hands are at 3 o’clock.
Crystal mirror: Corundum sapphire, 1.8 mm thick. Anti-reflective coating. Power reserve: 72 hours.
Water resistance: 30 bar (about 300 meters).
Strap: Panerai’s personalized blue rubber strap and titanium trapezoidal buckle.

Hamilton’s New Jazz Full Skeleton Gentleman And Ladies Watch

Hamilton’s self-developed H-20-S full-hollow movement is not only the precise heart of Jazzmaster Viewmatic Skeleton, Gents and Lady full-hollow gentleman and lady’s watches, but also its beating heart Open and candid beating the soul. The fully skeletonized movement reveals the looming mechanical art under the same skeletonized dial.

 The two watches are equipped with the same movement but different designs, interpreting women’s delicateness and men’s toughness from completely different perspectives, and they are constantly awakening the wearer’s pursuit of exquisite shapes and beautiful hearts. The traditional hollow-out technique and high-tech laser engraving complement each other, and the unparalleled sensory enjoyment makes it a coveted contemporary masterpiece.

 Hamilton’s self-developed H-20-S self-winding movement combines subtle craftsmanship with excellence and precision. The whole body of the movement is treated with brushed texture, the rotor is individually hollowed out, and the hardened Hamilton ‘H’ pattern is engraved on the base plate and the splint. These modern decorations add a dramatic effect to the traditional precision timer. Through the large-scale hollow, you can watch the operation of fine parts such as escapement, hairspring and barrel, so that the wearer can directly participate in this wonderful performance.

Hamilton Hamilton Women’s Hollow Watch

 Hamilton Hamilton Women’s Hollow Watch

 The Hamilton Jazzmaster Viewmatic Skeleton Lady is fully romantic in meticulous mechanical details and proudly reveals its emotions. The extremely modern lines outline a number of ring-shaped hollow windows on the silver shiny dial. The slender and elegant scales on the dial are like eternal drops of dew. These design details lead people’s eyes through the flower-like dial, peeking under the subtle H-20-S automatic winding movement. The rubies on the movement make this flower that never fades. mysterious. Moreover, in order to meet the wishes of today’s busy and efficient ladies, this model specially adopts a quick release strap structure, allowing the wearer to easily change different styles of straps to match various occasions and moods.

 Technical parameters of the Sir Hamilton Hollow Lady watch

Size: 36mm

Material: stainless steel, transparent back cover

Dial: Silver with waterdrop scale

Strap: Five-row stainless steel bracelet / ruby-colored white leather strap (quick release structure, easy to replace)

Movement: H-20-S automatic winding movement

Mirror: Anti-glare coated sapphire

Water resistance: 5 bar (50m)

 Sir Hamilton Hollow Men’s Watch

 The Hamilton Jazzmaster Viewmatic Skeleton Gents is equipped with the same automatic movement as the ladies’ watch, showing and describing the true nature of men. Through the front and back of the watch, you can watch the modern texture of the H-20-S movement. The mechanical watchmaking aesthetics and the bold and masculine spirit meet here. The zigzag arc on the dial outlines a charcoal gray pattern. Through the large-scale hollowed-out dial and movement, people can vaguely see the wrist under the watch. The silver and charcoal gray three-dimensional ring on the outside of the dial shows the time mark from 0 to 60 and the brand name. The hands and scales are coated with Super-LumiNova® fluorescent coating, which is in sharp contrast to the dark-toned dial surface. The watch comes with a five-row stainless steel bracelet or a black leather strap. Suddenly, the concept of ‘showing emotions’ was vividly interpreted.

 Technical parameters of Sir Hamilton Hollow Men’s Watch

Size: 40mm

Material: stainless steel, transparent back cover

Dial: Silver and Charcoal

Strap: Five-row stainless steel bracelet / black leather strap

Movement: H-20-S automatic winding movement

Mirror: Anti-glare coated sapphire

Water resistance: 5 bar (50m)

Kunlun Strives To Create A New Booth For This Year’s Basel Watch Exhibition

The grand event of the watch industry Basel Watch Show will be held from April 25 to May 2 this year. By then, Kunlun will welcome more than 400 retailers and more than 300 journalists from all over the world with a brand new booth.
 Kunlun’s booth will continue to be located in the most prestigious Hall 1. However, the new booth will be more spacious than before, creating a more comfortable and comfortable atmosphere. The completion of the new architectural solution of the Basel Watch Fair has made the number of booths in Hall 1 popular among the brands from 45 in 2012 to 21 this year, making the whole hall more open and more visible for the top watchmaking brands in the venue. Unique style.

Kunlun debuts at Basel Watch & Jewellery Show with new booth design
 The Kunlun booth specially created this time has the same visual design, creativity and technical complexity as the watches made by Kunlun, and the scale is huge, requiring at least 44 days to build and 19 days to dismantle. Up to 30 companies have participated in the design and production of this project, which aims to create a beautiful stage for the brand’s watches, and present the exquisite craftsmanship of the watches in the most gorgeous way.
 Like a building suspended in mid-air

 The new Kunlun watch booth was jointly created by Studer Architecture and 1 Studer, an architectural design company based in Neuchâtel, Switzerland. With a dynamic and fluid design element, a three-story structure booth was created. The design of the exterior wall of the exhibition booth is based on the long-standing sandalwood design. Through clever sanding technology, it creates a layered and exquisite sandalwood exterior wall. In addition, the brand’s representative Ti-Bridge series watches are used to fix the support of the long movement, which has also become the inspiration for the design of the architectural structure, injecting a light and suspended decoration into the overall design. These LED-supported aluminum load-bearing brackets extend from the ground to the top in the booth, and the showcases are alternately displayed between the pillars and the sides of the exterior wall, enhancing the transparency of the overall design.
 The interior design of the booth is based on light gray and bronze, with special sandalwood furniture to create a noble and elegant style. The open reception area and multiple vertical flowing spaces increase the overall lightness and transparency, making the interior of the exhibition booth suspended in midair.
 Three-storey booth area of ​​731 square meters

 A total of 15 sales meeting rooms are located in the center of the three-story booth, providing a comfortable and high-privacy meeting space. Guests of Kunlun Watch can also visit the restaurant on the middle floor of the booth to enjoy exquisite cuisine while watching Scenery of Hall 1.
 By the time Basel Watches kicks off this year, watch lovers will be able to see it.

Just Love Male Watches, We Are ‘smelly Face’ Cool Girl

Pay close attention to fashion street shooting. You will find that, unlike in the studio, stars and small stars are expressionless ‘stinky faces’, but they are still beautiful. In fact, the street shots of many celebrities are really on the street to buy vegetables, but why do they still look so stylish and individual? It’s enough to have at least one distinctive fashion item, the look is good, and you can also be so willful and be a cool girl with a ‘smelly face’.
Rolex Submariner 116610LV-97200 Green Dial Watch

Domestic public price: RMB 70,000
Watch diameter: 40 mm
Movement type: automatic machinery
Case material: 904L stainless steel
Water resistance: 300 meters
Watch details: 56,000
Watch diameter: 40.9 mm
Watch thickness: 12.3 mm
Movement type: automatic machinery
Case material: Stainless steel
Water resistance: 30 meters
Watch details: 1950 series PAM 00320 watch

Domestic public price: RMB 618,00
Watch diameter: 44 mm
Movement type: automatic machinery
Case material: Stainless steel
Water resistance: 300 meters
Watch details: 316L frosted stainless steel, polished bezel, this material has high corrosion resistance and hypoallergenicity, even girls with sensitive skin can safely wear it. The black dial of the watch is equipped with luminous Arabic numerals and hours, a date display window at 3 o’clock, and a small seconds dial at 9 o’clock. This watch is equipped with a Panerai P.9001 self-winding mechanical movement, which provides approximately 72 hours of power reserve. This Panerai watch with antique brown crocodile leather strap is full of neutral wind, suitable for a handsome suit and sharp eyes, to show the goddess charm.
Summary: The selection of female watches has always been very limited. Most of the typical female watch designs are inseparable from diamonds, rose gold, flashy decorations, etc., but whoever says that girls can only like these elements, who says that girls Must like these elements? There are no men’s watches and women’s watches, only ‘I like’. If you love men’s watches, you can choose your favorite watch. If you want to be a cool girl with a ‘smelly face’, just go cool.

Blancpain Creates A New Moon Phase Watch For Women: ‘moon Beauty’ Shines In The Air

Pioneering modern and interesting, Blancpain’s new ladies moon phase watch comes out. The stainless steel style is equipped with five strap replacement kits to understand women’s thoughts.

Villeret Classic Series Product Number: 6106-4628-95A
One watch in five styles
   From now on, changing the ‘tonality’ of watches and matching different dress styles is a matter of utmost convenience. The new Villeret classic series stainless steel watch has five strap replacement sets in the box, which are of different colors and materials: three alligator leather straps, which are red, midnight blue and sky blue; White ostrich leather strap and black satin strap. The replacement operation is easy, and the wearer can easily complete it by simply pressing the buckle on the strap.

   The new ‘Moon Beauty’ date-indicating moon phase watch features a bezel set with 48 diamonds and a stainless steel case with a diameter of 29.20 mm. The delicate white matte dial features willow-shaped hands, a pointer-indicating date display and a sapphire crystal moon phase display. The moon phase shows that this long-known and complicated function was once lost in the watchmaking industry. It was not until the early 1980s that Blancpain’s revival of the moon phase function allowed it to reappear. Since then, the moon phase display has become Blancpain’s signature signature. On the dial, the moon phases alternate between profit and loss, highlighting the profound relationship between watchmaking and astronomy. The face of the moon, corresponding to the phase change of the moon, shuttled through the small window on the dial. The moon phase display mechanism is realized by a 59-tooth moon phase wheel, and its corresponding time span is equivalent to two moon profit and loss cycles (each cycle is 29.5 days). Because of this, the moon phase display connected to the moon phase wheel is printed on the There are two moon faces. This moon phase display is a ‘Moon Beauty’ smiley face, with a moving beauty mole on the corner of the mouth. There is also an interesting historical story-in the eighteenth century France, the beautiful mole on the corner of the smiling mouth (because it looks like a fly, at the time it was called mouche, or fly-shaped dot) represents a playful attitude. At that time, the court women would respond to the admirers by painting a beauty mole, and the meaning changed with different positions.

Beauty outside the core
   The new Villeret classic date moon phase watch, equipped with a new automatic winding 913QL movement. The movement is equipped with a beryllium-bronze alloy balance wheel, and is equipped with inertia fine-adjustment screws and antimagnetic silicon hairspring. Silicon hairspring is one of the most important watchmaking innovations in the watchmaking industry in recent years. It has the advantages of low density, light weight, strong shock resistance, and super magnetic resistance. These characteristics give the hairspring an almost perfect geometry, improve the isochronism of the movement, and improve the accuracy of the watch. Through the sapphire crystal on the back of the watch, the gold oscillating weight suddenly jumps out of the eyes, and the snail-shaped bevels, polished corners, bars and ring-shaped Geneva ripples are all visible. These exquisite and sharp internal details are polished to highlight the ingenuity of Blancpain watchmaking.