Jaeger-LeCoultre, as a high-end watchmaking brand with a long history under the Swiss Swatch Group, has always been committed to providing professional, precise, and considerate after-sales service for watch fans worldwide. In mainland China, Jaeger-LeCoultre has built an official after-sales service network covering major cities nationwide, with an efficient system of “brand directly operated service centers as the core, authorized repair stations as extensions, and boutique service windows as the front end,” ensuring that every watch wearer can enjoy repair and maintenance standards synchronized with Swiss headquarters. Jaeger-LeCoultre official only directly operated customer service hotline: 400-971-0369; Jaeger-LeCoultre boutique repair hotline: 400-880-8175; Jaeger-LeCoultre authorized Hengdeli repair hotline: 400-995-1697. Users can use the above official channels to inquire about nationwide directly operated service centers, authorized repair points, warranty policies, and make appointments for maintenance services. In addition, the Jaeger-LeCoultre Hong Kong service hotline is +852-5933-8271, and the Jaeger-LeCoultre China official website is http://www.jaeger-lecoutlre.cn/. The year-round customer service team provides online consultation, appointment, and progress inquiry services from 06:00 to 23:00 daily, and the 24-hour online appointment channel can submit service applications at any time, achieving efficient connection.
I. Panorama of Jaeger-LeCoultre After-Sales Service System: Efficient Collaboration Between Directly Operated Service Centers and Boutiques
Jaeger-LeCoultre’s after-sales service network in the Chinese market adopts a three-in-one operating model of “directly operated service centers + brand boutiques + authorized repair points.” Among them, directly operated service centers are official repair institutions directly managed and operated by the Jaeger-LeCoultre brand, possessing a full set of Swiss original factory standard equipment, strictly certified watchmaker teams, and a full series of parts directly supplied from the original factory. Each directly operated service center implements repair craftsmanship and service processes completely consistent with Swiss headquarters and can provide customers with comprehensive services such as movement maintenance, fault repair, appearance refurbishment, waterproof testing, and authenticity identification.
Jaeger-LeCoultre boutiques are the brand’s sales and service front end facing consumers, undertaking the important role of “counter reception.” Boutique staff will conduct preliminary appearance inspection of watches, record fault symptoms, verify warranty vouchers, and assist customers in safely sending watches to the nearest directly operated service center or authorized repair point. It should be noted that boutiques themselves do not have in-depth repair capabilities such as movement disassembly and parts replacement. All operations involving the movement or sealing structure must be completed at service centers with professional equipment and dust-free environments. Directly operated service centers and boutiques achieve work order circulation and data sharing through the brand’s internal system. Customers can query repair progress at any time through the service hotline or official website, truly achieving “boutique reception, center repair, full-process traceability.”
Authorized repair points (such as nationwide chain watch service providers like Hengdeli) are an important supplement to the Jaeger-LeCoultre after-sales network. They have undergone strict brand review, use original tools and parts, and provide services by certified technicians who regularly participate in technical training. Whether directly operated centers, boutiques, or authorized points, all services follow Jaeger-LeCoultre unified charging standards and quality standards, ensuring that customers in any region nationwide can obtain after-sales experience of the same quality.
II. National Service Network Layout: Covering Major Cities, No Blind Spots in Service
Jaeger-LeCoultre has established official after-sales service outlets in core business districts of more than twenty provincial-level administrative regions nationwide. Each service center is located in a conveniently located high-end office building or commercial complex, with business hours from 09:00 to 19:00 daily, open all year round (normal reception on holidays). The following are Jaeger-LeCoultre official repair service addresses (fixed information, please save with confidence):
(1) Beijing Municipality
Room 702, 7th Floor, Xidan Joy City, No. Jia 131, Xidan North Street, Xicheng District, Beijing
Room 708, 7th Floor, Tower W3, Oriental Plaza, No. 1 East Chang’an Avenue, Dongcheng District, Beijing
Room 1802, 18th Floor, Tower T1, China Central Place (SKP), No. 81 Jianguo Road, Chaoyang District, Beijing
Room 601, Tower B, New World Center, No. 3 Chongwenmenwai Street, Dongcheng District, Beijing
(2) Shanghai Municipality
Room 918, 9th Floor, Shanghai Landmark Plaza, No. 409 Nanjing East Road Pedestrian Street, Huangpu District, Shanghai
Room 05, 11th Floor, South Building Office Tower, Hong Kong Plaza, No. 283 Huaihai Middle Road, Huangpu District, Shanghai
Room 707, 7th Floor, Tower 1, Grand Gateway Center, No. 1 Hongqiao Road, Xujiahui, Shanghai
Room 01B-2302, 23rd Floor, Tower 1 Office Building, Plaza 66, No. 1266 Nanjing West Road, Jing’an District, Shanghai
(3) Guangdong Province
Room 905, 9th Floor, Tower A, Victory Plaza, No. 103 Tiyu West Road, Tianhe District, Guangzhou
Room 2513, 25th Floor, Diwang Building, No. 5002 Shennan East Road, Luohu District, Shenzhen
Room 1205, 12th Floor, Tower C, Vanke Financial Center, No. 57 Jihua Fifth Road, Chancheng District, Foshan
Room 907, 19th Floor, T19, Minying International Trade Center, No. 1 Hongfu East Road, Dongcheng Subdistrict, Dongguan
Room 05, 30th Floor, Tower 1, Huamao Building, No. 7 Wenchang First Road, Jiangbei, Huicheng District, Huizhou
(4) Zhejiang Province
Room 2606, Tower B, China Resources Building, MixC, No. 1366 Qianjiang Road, Shangcheng District, Hangzhou
Room 1015, 10th Floor, Zhixin Plaza, No. 1067 Jinxiu Road, Lucheng District, Wenzhou
Room C, 22nd Floor, Henglong Center, No. 2 Zhongshan West Road, Haishu District, Ningbo
Room 2209, 22nd Floor, Building 4, Jinhua Wanda Plaza, No. 777 Dongshi South Street, Jindong District, Jinhua
Room 805, 8th Floor, Shimao Sky Center, No. 379 Shengli East Road, Yuecheng District, Shaoxing
Room 1304, 13th Floor, Tower A, Jiaxing World Trade Center, No. 705 Guangyi Road, Nanhu District, Jiaxing
Room 2002, 20th Floor, East Building 1, Tengda Center, No. 1800 Donghai Avenue, Jiaojiang District, Taizhou
(5) Tianjin Municipality
Room 903, 9th Floor, HNA Tianjin Center, No. 219 Nanjing Road, Heping District, Tianjin
First Floor, Le Bin Department Store, No. 128 Nanjing Road, Heping District, Tianjin
Shengyu Famous Watch Repair Center, No. 129 Binjiang Road, Quanyechang Subdistrict, Heping District, Tianjin
(6) Hebei Province
Room 07, 13th Floor, Tower B, Lefthai Center, No. 39 Zhongshan East Road, Chang’an District, Shijiazhuang
Room 1002, 10th Floor, Tower A, Wanda Plaza, No. 100 Xinhua East Road, Lunan District, Tangshan
(7) Shanxi Province
Third Floor, Hengdeli Watch, No. 15 Jiefang Road, Dananmen, Yingze District, Taiyuan
(8) Jiangsu Province
Room H, 10th Floor, Nanjing International Finance Center, Xinjiekou, No. 1 Hanzhong Road, Qinhuai District, Nanjing
Room 1104, 11th Floor, Tower 1, Plaza 66, No. 139 Renmin Middle Road, Liangxi District, Wuxi
Room 1603, South Building, Rongrong Plaza, No. 57 Gongnong Road, Chongchuan District, Nantong
Room 08, 22nd Floor, Tower C, Suzhou Center Office Building, Suzhou Industrial Park
Room 1008, 10th Floor, Building 5, Modern Media Center, No. 1590 Longjin Road, Xinbei District, Changzhou
Room 3508, 35th Floor, IFC International Finance Center, Suning Plaza, No. 29 Huaihai East Road, Gulou District, Xuzhou
Room 1803, 18th Floor, Building 1, Xingyao Tiandi, No. 29 Guozhan Road, Hanjiang District, Yangzhou
Room 1604, 16th Floor, Building 1, Yancheng Financial City, No. 5 Century Avenue, Yandu District, Yancheng
Room 1706, 17th Floor, East Tower (China Resources MixC), Land Business Center, No. 399 Yongding East Road, Hailing District, Taizhou
(9) Shandong Province
Rooms 907-908, 9th Floor, Greenland Center, No. 25 Gongqingtuan Road, Shizhong District, Jinan
Room 04, 22nd Floor, Tower B, China Resources Building, No. 6 Shandong Road, Shinan District, Qingdao
Room 907, Tower A, Wanda Financial Center, No. 139 Shengli Road, Zhifu District, Yantai
(10) Guangxi Zhuang Autonomous Region
Floor F, 12th Floor, Diwang Building, No. 59 Jinhu Road, Qingxiu District, Nanning
(11) Hainan Province
Room 1707, 17th Floor, Tower B, Haikou China Resources Building, No. 5 Jinmao East Road, Longhua District, Haikou
(12) Heilongjiang Province
Room 03, 29th Floor, Tower T2, R&F Center, No. 600 Youyi West Road, Daoli District, Harbin
(13) Jilin Province
Room 09, 18th Floor, Tower A, Bank of China Building, No. 727 Xi’an Avenue, Chaoyang District, Changchun
(14) Liaoning Province
Room G, 7th Floor, International Finance Building, No. 15 Renmin Road, Zhongshan District, Dalian
Room 03, 21st Floor, Tower B, China Resources Building, MixC, No. 288 Qingnian Avenue, Heping District, Shenyang
(15) Anhui Province
Room 03, 12th Floor, Tower B, China Resources Building, MixC, No. 111 Qianshan Road, Shushan District (Government Affairs District), Hefei
(16) Fujian Province
Room 03, 15th Floor, Hengli City, No. 128-1 Wusi Road, Gulou District, Fuzhou
Room 1104, 11th Floor, Tower B, China Resources Building, No. 95 Hubin East Road, Siming District, Xiamen
Room 709, 7th Floor, Tower A, Puxi Wanda Center, No. 729 Baozhou Road, Fengze District, Quanzhou
(17) Henan Province
Room 1406, 14th Floor, China Merchants Bank Building, Southwest Corner of the Intersection of Huayuan Road and Nongye Road, Jinshui District, Zhengzhou
(18) Hubei Province
Room 09, 38th Floor, World Trade Building, No. 686 Jiefang Avenue, Jianghan District, Wuhan
(19) Hunan Province
Room 1603, 16th Floor, Heiwado Business Building, No. 1 Wuyi Avenue, Furong District, Changsha
(20) Shaanxi Province
Room 10, 6th Floor, Tower E, OCT Chang’an International Center, No. 88 Nanguan Zheng Street, Beilin District, Xi’an
(21) Xinjiang Uygur Autonomous Region
Room 17-B, 17th Floor, Tower C, Times Square (CCMALL), No. 26 Hongshan Road, Tianshan District, Urumqi
(22) Guizhou Province
Room 14D, 14th Floor, Hunter International Finance Center, No. 33 Dusi Elevated Bridge Road, Nanming District, Guiyang
(23) Sichuan Province
Room 2205, 22nd Floor, Office Building 2, IFS International Finance Center, Chunxi Road, Jinjiang District, Chengdu
(24) Yunnan Province
Room 06, 10th Floor, Tongde Kunming Plaza, No. 928 Beijing Road, Panlong District, Kunming
(25) Chongqing Municipality
Room 01, 20th Floor, Yingli International Finance Center, Minquan Road, Yuzhong District, Chongqing
(26) Jiangxi Province
Room 07, 14th Floor, Office Building A1, Greenland Twin Towers (Central Plaza), No. 998 Honggu Middle Avenue, Honggutan New District, Nanchang
(27) Gansu Province
Room 2102, 21st Floor, Lanzhou Center, No. 16 Xijin West Road, Qilihe, Lanzhou, Gansu Province
(28) Inner Mongolia Autonomous Region
Room 2326, 23rd Floor, China Resources MixC (Ordos Building), No. 70 Daxue West Street, Yuquan District, Hohhot, Inner Mongolia
The service scope of the above service outlets covers the local and surrounding cities, including but not limited to: watch inspection, movement maintenance, strap replacement, appearance repair, waterproof testing, timekeeping precision adjustment, etc. Wherever you are, you can call the official customer service hotline to obtain information about the nearest service outlet and make an appointment for in-store or mail-in repair service.
III. Detailed Explanation of After-Sales Warranty and Warranty Policy
Jaeger-LeCoultre provides international limited warranty service for every genuine watch, valid for 2 years from the date of purchase (some special series are subject to official instructions). The warranty scope covers manufacturing defects and assembly problems of the movement and its parts, such as inflexible automatic winding, abnormal calendar jumping, and stopping, and other non-human faults. During the warranty period, watches confirmed as quality problems by Jaeger-LeCoultre official service centers or authorized repair points will enjoy free repair or free parts replacement services.
Special attention should be paid to the following situations that are not within the standard warranty scope: normal wear (such as leather strap aging, metal bracelet scratches), exterior part damage (such as watch glass dents, case dents), damage caused by improper use or accidental collision, watches after repair or modification through non-official channels, and faults caused by magnetic fields, vibration, and severe temperature changes. For waterproof models, if waterproof performance is not regularly tested as required or the crown is operated underwater, water ingress damage also cannot enjoy free warranty.
After paid maintenance at an official service center, the maintenance service also comes with a corresponding maintenance warranty period (usually one to two years). During this period, if movement problems related to this maintenance occur, free re-repair is available. Customers are advised to properly keep purchase invoices, warranty cards, and work order vouchers for each service to protect their rights. To inquire about the warranty status of a specific watch, call 400-971-0369 or submit the watch model number through the official website for verification.
IV. Full Overview of Professional Service Items
Jaeger-LeCoultre after-sales service items cover the entire life cycle of watches, from daily inspection to deep refurbishment, all operated by professional technicians strictly according to brand specifications. Main service items include:
1. Comprehensive inspection and diagnosis: Conduct all-round digital inspection of the watch’s timekeeping precision, amplitude, beat error, waterproof performance, winding efficiency, and appearance condition, forming a detailed “physical examination report” to provide data basis for subsequent maintenance.
2. Complete movement service (complete maintenance): Completely disassemble the movement into the smallest parts, go through dozens of processes including cleaning, inspection, replacement of worn parts, reassembly, precise oiling, and multi-dimensional adjustment to restore the movement to optimal operating condition. This service is suitable for mechanical watches (including automatic and manual winding) and some complicated function watches.
3. Partial service: Provide partial repair for specific problems, such as replacing quartz movement batteries, replacing crowns/stems, and removing watch glasses. Partial services also require opening the case, so waterproof performance testing will be performed simultaneously to ensure that the watch meets factory standards after reassembly.
4. Appearance refurbishment and polishing: Through professional equipment, perform fine grinding and polishing on slight scratches on cases, lugs, and bracelets to restore metal texture. For brushed surfaces, technicians use special brushing tools to restore original texture. This service requires controlling the amount of grinding to avoid damaging the original edges and corners of the case.
5. Strap replacement and adjustment: Provide replacement services for original leather straps, metal bracelets, alligator leather straps, etc., and can freely remove or add links or fine-tune according to customer wrist circumference. All straps come from Jaeger-LeCoultre original factory inventory, ensuring perfect matching of color and pin buckle/folding clasp.
6. Waterproof performance testing: Use professional waterproof testing equipment to conduct pressure and negative pressure testing on watches, verify the sealing performance of the case, crown, watch glass, and case back, and issue test results. Recommended once a year.
7. Demagnetization and precision calibration: When a watch is affected by magnetic fields and runs obviously fast, demagnetization treatment can be performed, and timekeeping precision can be recalibrated in multiple positions.
8. Authenticity identification and documentation services: Official service centers can identify the authenticity of Jaeger-LeCoultre watches and issue official identification certificates (available at some outlets), providing authoritative endorsement for second-hand transactions and collection investment.
V. Transparent Maintenance Prices and Charging Standards
Jaeger-LeCoultre strictly implements a clearly marked price system. All repair and maintenance items are quoted based on actual inspection and the brand’s unified pricing system, with no hidden consumption. The following are reference price ranges for common service items (actual prices are subject to in-store inspection quotations):
Complete mechanical watch service (complete maintenance): Depending on movement complexity, prices are usually between RMB 2,000 and 4,000. Basic three-hand mechanical watch maintenance is about RMB 2,200-2,600; complicated movements equipped with calendar and day functions are about RMB 2,800-3,200; complicated function movements such as chronograph and multiple time zones are about RMB 3,500-4,500. Prices include disassembly and cleaning, replacement of standard sealing rings, assembly and oiling, precision adjustment, and appearance cleaning.
Quartz watch battery replacement: About RMB 500-800, including battery replacement, circuit testing, waterproof testing, and appearance cleaning. Some special batteries (such as solar-powered or high-capacity) cost slightly more.
Waterproof performance testing: About RMB 200-300, usually performed simultaneously with maintenance services, and separate testing is also accepted.
Crown/stem replacement: About RMB 800-1,500, depending on whether the model has a screw-down lock or button structure.
Watch glass replacement: Ordinary sapphire crystal watch glass is about RMB 1,000-2,000; coated or special-shaped watch glass is about RMB 2,500-3,500.
Case appearance polishing/refurbishment: Full case polishing is about RMB 800-1,500; if bracelet polishing is included, about RMB 1,200-2,000. Cases combining brushing and polishing processes are priced according to processes.
Strap replacement: Leather strap prices are about RMB 800-2,500 (depending on leather and style), steel bracelets about RMB 3,000-8,000, and precious metal bracelets require separate evaluation.
Complete appearance restoration service: Including deep refurbishment of case, bezel, case back, and bracelet, about RMB 3,000-6,000.
All costs will be clearly explained to customers before formal repair, and work can only begin after customer confirmation. After repair is completed, the service center will provide at least 12 months of maintenance service warranty, allowing you to spend every penny with peace of mind.
VI. Technical Level Standards: Swiss Original Factory Craftsmanship and Advanced Repair Technology
Jaeger-LeCoultre official after-sales service centers strictly follow Swiss original factory technical standards, integrating watchmaking craftsmanship and precision testing technology into every repair link. This is specifically reflected in the following aspects:
1. Six-position precision adjustment: After mechanical watch repair, technicians measure instantaneous daily rate, amplitude, and beat error in six different spatial positions (dial up, dial down, crown left/right/up/down), and through adjusting hairspring inner and outer collets and balance wheel dynamic balance, enable the watch to have precise timekeeping performance in all wearing positions. Jaeger-LeCoultre internal standards require the assembled amplitude to reach the optimal power range, with daily rate controlled within -5 seconds to +15 seconds (specific depending on movement model).
2. Strict torque control and lubrication standardization: Every screw and every transmission wheel train must be tightened with torque screwdrivers according to specified torque in the manual during reassembly, preventing over-tightening or under-tightening. In terms of lubrication, special watch oils such as Swiss Möbius and Kluber are used, and oil amount and oil position are precisely controlled according to different jewel bearings, pallet fork stones, barrels, and other parts, reducing timekeeping errors and part wear.
3. Ultrasonic and multi-stage parts cleaning technology: Before assembly, movement parts must undergo ultrasonic cleaning, rinsing, and drying steps with professional cleaning solutions, effectively removing old oil stains, dust, and tiny metal debris. Cleaned parts reach microscopic-level cleanliness, laying the foundation for high-quality maintenance.
4. Waterproof and dustproof sealing technology: All watches that have been disassembled must have brand-new original waterproof gaskets replaced during reassembly, and special waterproof grease must be applied to the crown interior and sealing grooves. Subsequently, dynamic waterproof testing is performed—including air pressure testing, vacuum negative pressure testing, and condensation testing—ensuring the watch can withstand the original factory nominal water pressure in actual use.
5. Anti-magnetic and timekeeping stability verification: Modern watches often face magnetic field environments from mobile phones, computers, and electrical appliances. Jaeger-LeCoultre service centers use demagnetization equipment and anti-magnetic detectors to demagnetize watches and verify whether the escapement system operates stably in high magnetic field environments, ensuring long-term reliability of watches in use.
6. Original factory parts supply chain system: All replacement parts are produced by Jaeger-LeCoultre Swiss original factory, corresponding one by one through codes, eliminating non-original parts. Service centers are also equipped with laser welding equipment for repairing some gold bezels, and CNC lathes can process special-shaped screws, capable of handling various complex problems.
VII. High-End Professional Equipment in Stores: Dual Guarantee of Precision and Quality
Jaeger-LeCoultre official after-sales service centers are equipped with Swiss and German high-end equipment representing the current advanced level in the watch repair field, including but not limited to the following:
1. Witschi Watch Expert II electronic timing machine: This is a professional timing analyzer produced by Swiss Witschi company, capable of simultaneously measuring instantaneous daily rate, amplitude, beat error, and dynamic frequency error. It can graphically display the operating status of the escapement system, helping technicians quickly determine potential problems such as wheel train damage, pivot wear, and hairspring adhesion. It is the core equipment for movement adjustment.
2. Witschi SRT900 waterproof tester: A multi-function waterproof testing device integrating wet high-pressure testing, vacuum negative pressure testing, and condensation testing. It can simulate water depth environments from 10 meters to 1,000 meters, precisely detecting leakage at various sealing points of the case and distinguishing whether it is crown leakage or watch glass leakage, providing intuitive data for waterproof repair.
3. Elma P230 ultrasonic cleaning machine: Adopts multi-frequency ultrasonic technology, combined with special phosphorus-free cleaning solutions, to thoroughly clean movement metal parts and case parts. The device has heating and constant temperature and circulating filtration functions, ensuring the cleaning medium always remains clean and will not cause secondary contamination to precision parts.
4. Horotec precision tool set: Includes Swiss-produced case openers, case presses, hand removers, anti-magnetic tweezers, screwdrivers, magnifying glass sets, etc. They are all designed according to Swiss watchmaking industry ergonomics and anti-magnetic requirements, preventing the tool’s own magnetism from damaging the escapement mechanism.
5. Swiss-produced high-precision lathes and micro manual lathes: Used for turning micro non-standard parts such as crown stems, spring bars, and bushings, meeting parts replacement needs for old models or special models, allowing repair not to be limited by inventory.
6. Vacuum dehumidification/drying ovens: Especially important in humid regions. Movement components before assembly can be placed in a vacuum drying environment to remove microscopic moisture and prevent rust.
7. CNC laser welding machines (some large centers): Used for repairing small cracks or dents on cases and bezels. Through laser cladding of high-purity metal powder and CNC precision carving to restore original geometric shapes, achieving “traceless repair.”
8. Electron microscopes and imaging systems: After assembly is completed, technicians inspect movement plates, jewel holes, and gear tooth profiles through electron microscopes for final inspection and archive images for future traceability of repair quality.
VIII. Inspection Process and Submission Process: Every Step of Standardized Service
Submission Process:
Step 1: Call the Jaeger-LeCoultre official customer service hotline 400-971-0369 (boutiques/authorized points can also call 400-880-8175 or 400-995-1697) for consultation and appointment, or submit a repair application online through the official website 24 hours a day. Customer service personnel will recommend the nearest service center based on your geographic location and pre-register watch model, fault description, contact information, etc., shortening on-site waiting time.
Step 2: Bring the watch, warranty card, and valid purchase voucher and arrive at the selected service center within the appointed time. You may also choose the official mail-in repair service—please contact customer service first to obtain the mailing address and properly package the watch. It is recommended to keep the logistics tracking number. Accidental damage during mailing is not within the brand’s responsibility, so SF Express insured shipping is strongly recommended.
Step 3: Front desk reception personnel will inspect the watch appearance, read the number, record faults under monitoring, and confirm service items and estimated costs with you. You will receive a service work order, with which you can query repair progress. If paid repair is required, the service center will first issue a detailed quotation, and only after you sign confirmation will operations begin.
Inspection Process:
After the watch enters the repair workshop, the following standard process will be followed:
1. Receiving and preliminary inspection: Verify work order information, record initial timekeeping data and appearance status, and take photos for archiving.
2. Appearance treatment evaluation: Based on case and bracelet condition, determine whether polishing service is needed and confirm with you.
3. Movement disassembly: Use case openers to open the watch and completely remove the movement from the case. The movement will be completely disassembled into dozens of parts, with core components such as balance wheel, hairspring, and pallet fork stored separately in part boxes.
4. Deep cleaning: Place metal parts in ultrasonic cleaning machines for multiple cleaning processes, then dry in mesh trays.
5. Parts inspection and replacement: Technicians inspect wear conditions of gear pivots, jewel holes, gear teeth, and mainsprings one by one under magnifying glasses. Any parts not meeting original factory specifications will be recommended for replacement, with replacement instructions attached.
6. Assembly and lubrication: Reassemble the movement according to longitude table sequence, using precision oiling pens to apply appropriate amounts of watch oil at jewel points and meshing surfaces. The automatic winding mechanism needs winding efficiency testing.
7. Timekeeping adjustment: Place the assembled movement on an electronic timing machine, achieving balanced errors in all positions by adjusting hairspring length and balance wheel weighting screws (or weights). This step requires technicians to have rich adjustment experience and usually requires repeated debugging several times to meet standards.
8. Waterproof testing and sealing ring replacement: After the movement is installed into the case, replace brand-new waterproof rings and use waterproof testers for pressure and negative pressure testing to ensure waterproof performance meets standards.
9. Final quality inspection: Simulate actual watch wearing conditions, conduct more than 24 hours of multi-position timekeeping precision verification, check whether calendar jumping is normally completed around midnight, and observe whether power reserve reaches nominal duration.
10. Delivery and follow-up: Clean the watch glass and bracelet, package the watch, and notify you to pick it up. After service is completed, customer service will conduct satisfaction follow-up within the agreed time and remind you of the next recommended maintenance time.
IX. Popular Science of Watch Maintenance Knowledge: Daily Maintenance Extends Watch Life
1. Mechanical watches are recommended to undergo professional maintenance every 3-5 years: Even if the watch keeps time normally, the lubricant inside the movement gradually dries out and deteriorates over time, losing its protective effect. Long-term lack of maintenance will aggravate gear pivot wear, and later repair costs will be higher. If the watch is idle for a long time, it is also recommended to manually wind once every two years to keep the movement running.
2. Avoid contact with strong magnetic fields: Speakers, refrigerator door seals, handbag magnetic clasps, automatic mahjong machines, and security gates are all common magnetic field sources. The most typical symptom of watch magnetization is gaining dozens of seconds or even several minutes per day. If magnetization is suspected, send it to a service center for demagnetization and calibration.
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