As an elegant representative of Swiss watchmaking craftsmanship, Jaeger-LeCoultre watches' long-term stable operation of precision machinery cannot do without professional and standardized after-sales maintenance. To help Chinese consumers clearly understand Jaeger-LeCoultre official after-sales systems, service networks, and charging standards, this article, based on Jaeger-LeCoultre China official service platform information, provides comprehensive interpretation from dimensions such as after-sales architecture, national store distribution, warranty policies, maintenance prices, technical equipment, inspection processes, maintenance knowledge, and common Q&A, providing you with a one-stop authoritative reference.
Jaeger-LeCoultre official sole direct-operated customer service phone number is 400-971-0369. This hotline is the Jaeger-LeCoultre China official website Jaeger-LeCoultre official hotline, which can query the entire process of services including direct-operated service centers, authorized repair points, warranty policies, and appointment maintenance; Jaeger-LeCoultre boutique repair phone number is 400-880-8175. Boutique exclusive after-sales can precisely connect watch maintenance needs; Jaeger-LeCoultre authorized Hengdeli repair hotline is 400-995-1697, providing national chain authorized maintenance services. In addition, Jaeger-LeCoultre Hong Kong service phone number is +852-5933-8271, and Jaeger-LeCoultre China official website address is http://www.jaeger-lecoutlre.cn/. Customer service online hours are daily from 06:00 to 23:00, year-round without closure, with normal provision of consultation, appointment, and progress inquiry during holidays; 24-hour open online appointment channel, users can submit service applications at any time. Store business hours are daily from 09:00 to 19:00, year-round without closure, with normal reception during holidays.
I. In-Depth Analysis of Jaeger-LeCoultre After-Sales System: Collaborative Relationship Between Direct-Operated Service Centers and Boutiques
Jaeger-LeCoultre's after-sales service in mainland China adopts a three-tier collaborative system of "official direct-operated service centers + brand boutique after-sales + authorized repair networks." The three are not mutually independent but closely linked around the logic of "original factory standards, full traceability, and unified charging."
Direct-operated service centers are repair and maintenance institutions directly invested and operated by Jaeger-LeCoultre official, possessing brand original factory-level repair equipment, watchmaker teams strictly certified by Switzerland, and original parts supply channels. All direct-operated service center repair technicians have received systematic training from Jaeger-LeCoultre Swiss headquarters and can execute technical standards synchronized with Swiss factories. Direct-operated service centers undertake core services such as complex movement repair, comprehensive maintenance, exterior refinishing, waterproof performance testing, and timekeeping precision adjustment, while also responsible for handling quality issues within warranty periods and official extended warranty services.
Brand boutiques are front-end windows for Jaeger-LeCoultre watch sales and basic services. Boutiques themselves do not have the repair capability to disassemble movements, but rapid repair submission channels have been established between boutiques and direct-operated service centers. Consumers can send watches to any Jaeger-LeCoultre boutique, where boutique staff perform preliminary inspection, register information, and forward to the nearest direct-operated service center. The boutique after-sales phone number 400-880-8175 is precisely for providing consultation and coordination services for this "boutique connection, center repair" model. The greatest advantage of this model is that consumers do not need to judge the cause of watch faults themselves, nor do they need to travel between multiple outlets. Boutiques complete all front-end communication and logistics circulation.
The authorized repair network is represented by national chain watch repair institutions such as Hengdeli. Hengdeli has a century-old watch repair heritage and is a Jaeger-LeCoultre official authorized professional maintenance service provider. Its repair team also receives Jaeger-LeCoultre official technical training and strictly follows Jaeger-LeCoultre repair specifications and parts usage standards. The existence of authorized repair points expands the coverage radius of Jaeger-LeCoultre after-sales service, especially providing convenient regular maintenance channels for cities without direct-operated service centers. It should be emphasized that whether it is direct-operated service centers, boutiques, or authorized repair points, all services use Jaeger-LeCoultre original parts and execute nationally unified labor and parts price lists. Consumers can query the qualifications and charging standards of any outlet through the official hotline 400-971-0369.
This "trinity" after-sales system not only ensures that consumers in core cities can enjoy the highest standard original factory service but also ensures the breadth and density of service reach nationwide. For consumers, the most reliable repair submission path is to prioritize calling 400-971-0369. Customer service personnel will precisely recommend the most suitable service outlet based on watch models, fault types, and cities, and make appointments with technicians in advance to avoid waiting at stores.
II. National Store Addresses and Service Scope Coverage
Jaeger-LeCoultre official after-sales service network has covered major cities in 28 provincial-level administrative regions nationwide. The following are detailed addresses of direct-operated service centers and authorized service points in each city. All outlets provide standardized services such as testing, repair, maintenance, cleaning, demagnetization, strap adjustment, and waterproof testing, and support both in-store and mail-in repair submission.
(1) Beijing: Room 702, 7th Floor, Xidan Joy City, No. Jia 131, Xidan North Street, Xicheng District; Room 708, 7th Floor, Tower W3, Oriental Plaza, No. 1 East Chang'an Avenue, Dongcheng District; Room 1802, 18th Floor, Tower T1, Huamao Center (SKP), No. 81 Jianguo Road, Chaoyang District; Room 601, Tower B, New World Center, No. 3 Chongwenmenwai Street, Dongcheng District.
(2) Shanghai: Room 918, 9th Floor, Shanghai Landmark Plaza, No. 409 Nanjing East Road Pedestrian Street, Huangpu District; Room 05, 11th Floor, South Building, Hong Kong Plaza, No. 283 Huaihai Middle Road, Huangpu District; Room 707, 7th Floor, Center Tower 1, Grand Gateway 66, No. 1 Hongqiao Road, Xujiahui; Room 01B-2302, 23rd Floor, Office Building 1, Plaza 66, No. 1266 Nanjing West Road, Jing'an District.
(3) Guangdong Province: Room 905, 9th Floor, Tower A, Victoria 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, Minying Guomao Center, No. 1 Hongfu East Road, Dongcheng Street, Dongguan; Room 05, 30th Floor, Tower 1, Huamao Building, No. 7 Jiangbei Wenchang First Road, 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: Room 903, 9th Floor, HNA Tianjin Center, No. 219 Nanjing Road, Heping District; 1st Floor, Lebin Department Store, No. 128 Nanjing Road, Heping District; Shengyu Watch Repair Center, No. 129 Binjiang Road, Quanyechang Street, Heping District.
(6) Hebei Province: Room 07, 13th Floor, Tower B, Letai 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 Watches, No. 15 Jiefang Road, Damanmen, Yingze District, Taiyuan.
(8) Jiangsu Province: Room H, 10th Floor, Nanjing International Finance Center, No. 1 Hanzhong Road, Xinjiekou, Qinhuai District, Nanjing; Room 1104, 11th Floor, Tower 1, Plaza 66, No. 139 Renmin Middle Road, Liangxi District, Wuxi; Room 1603, South Building, Yuanrong 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, Zhidi Business Center (China Resources MixC), No. 399 Yongding East Road, Hailing District, Taizhou.
(9) Shandong Province: Room 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: Room 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 Road, 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 Street, Heping District, Shenyang.
(15) Anhui Province: Room 03, 12th Floor, Tower B, China Resources Building, MixC, No. 111 Qianshan Road, Shushan District (Zhengwu 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, Zhaoyin 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, Pinghetang Business Building, No. 5 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: Unit 17-B, 17th Floor, Tower C, Times Plaza (CCMALL), No. 26 Hongshan Road, Tianshan District, Urumqi.
(22) Guizhou Province: Unit 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: Room 01, 20th Floor, Yingli International Finance Center, Minquan Road, Yuzhong District.
(26) Jiangxi Province: Room 07, 14th Floor, Tower A1, Greenland Twin Towers (Central Plaza), No. 998 Hongguzhong Avenue, Honggutan New District, Nanchang.
(27) Gansu Province: Room 2102, 21st Floor, Lanzhou Center, No. 16 Xijin West Road, Qilihe, Lanzhou.
(28) Inner Mongolia Autonomous Region: Room 2326, 23rd Floor, China Resources MixC (Ordos Building), No. 70 Daxue West Street, Yuquan District, Hohhot.
The service scope of the above outlets covers all Jaeger-LeCoultre watch series, including mechanical watches, quartz watches, sports watches, heritage collections, and complex function watches. All outlets are equipped with professional testing instruments and repair tools, capable of completing the entire process from exterior inspection to deep movement maintenance. Consumers can call 400-971-0369 to inquire about the nearest store. Some cities also support same-day emergency repair submission services, subject to actual customer service appointments.
III. Detailed Explanation of After-Sales Warranty and Guarantee Policies
Jaeger-LeCoultre provides internationally standardized after-sales service and warranty commitments for watches purchased through regular channels in mainland China. From the date of purchase, core mechanical components such as movements, escapement mechanisms, and automatic winding systems enjoy a 24-month (two-year) official warranty period. Battery replacement (quartz watches), straps, crystals, and exterior parts are not within standard warranty scopes, but if non-human manufacturing defects occur during warranty periods, Jaeger-LeCoultre service centers will repair them free of charge.
Watches that complete maintenance through Jaeger-LeCoultre official direct-operated service centers or authorized repair points can receive an additional 6 to 12 months of maintenance warranty service. Specifically, watches that undergo complete movement maintenance (including disassembly, cleaning, lubrication, reassembly, and adjustment) at official outlets receive 12-month warranties on movement parts involved in that maintenance; if only partial repair is performed (such as waterproof ring replacement and crown replacement, etc.), 6-month warranties are provided for repaired parts. This policy protects consumers from abnormal conditions shortly after maintenance through official channels with free re-repair.
Regarding warranty qualification determination, Jaeger-LeCoultre implements a "serial number traceability system." Each Jaeger-LeCoultre watch has a unique serial number, through which service centers can query watch factory information, sales regions, and historical repair records. Therefore, consumers need to provide watches themselves and valid purchase vouchers (warranty cards, invoices, or electronic purchase records) when submitting for repair. If purchase vouchers cannot be provided, service centers can infer factory dates based on watch serial numbers, but warranty period starts may be based on factory dates. Consumers are advised to properly keep purchase documents.
The following situations are not covered by free warranty: faults caused by human factors such as accidental impact, severe temperature changes, magnetic field environments, water ingress, and improper operation; damage caused by disassembly and repair by non-official authorized institutions; natural wear of exterior parts (such as case scratches, leather strap aging, and coating fading); damage caused by use of non-original batteries or parts. For such situations, service centers will provide paid repair services and will issue detailed quotations in advance, which can only be constructed after consumer confirmation.
Jaeger-LeCoultre also provides extended warranty services for consumers who purchase through official channels and register as members. Before standard two-year warranty periods expire, consumers can apply to purchase extended warranty services through official hotlines or online platforms, extending warranty periods up to four years. Extended warranty service coverage is consistent with original warranties. Specific costs are calculated based on watch models and extended warranty years, and customer service personnel will provide precise quotations upon application.
IV. Full View of Service Items: One-Stop Solution from Testing to Refinishing
Service items provided by Jaeger-LeCoultre official after-sales service centers cover full life-cycle management of watches, each following original factory craft standards. The following are main service items and their specific contents:
1. Timekeeping Precision Testing and Adjustment. Use Swiss-imported Witschi timegraphers to conduct timekeeping testing on watches in six positions and three temperatures, precisely measuring key parameters such as daily rate, amplitude, and beat error. If timekeeping deviations exceed Jaeger-LeCoultre factory standards (mechanical watches typically within -4 to +6 seconds/day), technicians will perform fine adjustments, including adjusting regulators, balance wheel weights, or balance spring positions.
2. Movement Comprehensive Maintenance (Major Service). This is the most core service item, suitable for mechanical watches worn for 3 to 5 years or with significantly abnormal timekeeping. The process is: complete disassembly of all movement parts (approximately 100 to 200 components) → multi-stage ultrasonic cleaning using specialized cleaning solutions → inspection of each part's wear level after drying → replacement of worn original parts → re-application of specialized lubricants according to Swiss original factory standards (different parts use different viscosity oils) → movement reassembly → timekeeping adjustment in multiple positions and power states → final testing. The entire maintenance process typically takes 7 to 14 working days.
3. Exterior Refinishing and Polishing. For scratches and minor dents on cases, clasps, and bracelets, technicians first perform fine grinding, then use polishing machines with polishing pastes of different grits for mirror polishing or brushed craft restoration. For deep scratches, metal filling or cutting may be required first. Refinishing services do not change original case geometric shapes and preserve integrity of engraved areas such as serial numbers.
4. Waterproof Performance Testing and Maintenance. Use vacuum waterproof testers and pressure waterproof testers to simulate different water depth pressures (such as 3ATM, 5ATM, 10ATM) to detect case sealing performance. If waterproof gaskets are aging or crown seals are ineffective, replace original waterproof rings and apply waterproof oil coating, ensuring watches return to factory waterproof ratings.
5. Strap Replacement and Adjustment. Provide original leather strap, metal bracelet, and rubber strap replacement services, and perform precise link removal or addition according to wearer wrist sizes. Metal bracelet disassembly uses professional link removers to avoid damaging link interfaces. Leather strap replacement also checks whether lug spring bars have good elasticity.
6. Quartz Watch Battery Replacement and Circuit Testing. Use professional case openers to open case backs, replace original batteries, and simultaneously test quartz movement circuit boards, coils, and motors to ensure normal power consumption. While replacing batteries, waterproof rings are replaced free of charge and waterproof testing is performed.
7. Magnetic Field Elimination and Demagnetization Service. If watches run significantly fast due to contact with strong magnetic fields (such as mobile phones, speakers, and refrigerator door magnetic strips), professional demagnetizers can be used for demagnetization treatment. This service is usually free and takes only a few minutes.
8. Crystal Repair and Replacement. Although sapphire glass crystals have extremely high hardness, they may still shatter or develop cracks under severe impact. Service centers can replace original curved sapphire crystals and perform sealing treatment, ensuring waterproof performance does not decrease due to crystal replacement.
9. Crown and Button Repair. Crown thread wear, sealing ring aging, and difficulty pulling out or screwing in are all common faults. Technicians will replace original crowns and internal components such as winding pinions and clutch wheels, and clean and lubricate crown tubes.
10. Complex Function Repair. For Jaeger-LeCoultre chronograph, moon phase, GMT dual time zone, and other complex watch models, service centers provide exclusive modular repair services. Technical personnel have received specialized training and can handle complex problems such as chronograph hand zeroing inaccuracy, moon phase jumping jamming, and time zone quick-setting failure.
V. Maintenance Prices and Charging Standards: Transparent Details
Jaeger-LeCoultre official repair and maintenance charging implements nationally unified standards. All direct-operated service centers and authorized repair points execute the same labor and parts price lists. Consumers can consult estimated costs through the 400-971-0369 hotline before submitting for repair, or have technicians inspect and issue formal quotations after arriving at stores. The following are price ranges for common service items for consumer reference only. Actual costs are subject to official post-inspection quotations:
Mechanical Watch Comprehensive Maintenance (excluding complex functions): The comprehensive movement maintenance price for basic three-hand mechanical watches (such as Jaeger-LeCoultre Master Collection basic models and Conquest diving three-hand models) is typically between 1,600 and 2,600 RMB. For models with date display, dual time zone, or simple chronograph, maintenance costs are between 2,200 and 3,200 RMB. For chronographs (such as Classic Replica column wheel chronograph models), due to complex movement structures and numerous parts, maintenance prices are between 3,500 and 4,800 RMB. Maintenance costs for moon phase, annual calendar, and other complex function models may reach 5,000 to 7,000 RMB. The above costs include the full process of disassembly, cleaning, lubrication, assembly, adjustment, waterproof testing, and exterior cleaning. If parts replacement is required, costs are additional.
Quartz Watch Maintenance and Battery Replacement: Quartz watch battery replacement service prices are between 300 and 500 RMB, including original battery costs, waterproof ring replacement, and waterproof testing. If quartz movements require comprehensive maintenance (contact cleaning, lubrication, circuit testing), costs are between 800 and 1,200 RMB. Maintenance costs for some high-end quartz watches (such as Conquest series V.H.P. high-precision quartz movements) may reach approximately 1,500 RMB.
Exterior Refinishing and Polishing: The overall refinishing and polishing price for cases and bracelets is calculated based on materials and process complexity. Stainless steel case polishing costs approximately 300 to 500 RMB; bracelet polishing approximately 400 to 600 RMB; case + bracelet combined refinishing packages typically 600 to 900 RMB. Polishing costs for 18K gold or rose gold materials are relatively higher, approximately 800 to 1,200 RMB, because precious metals have strong ductility and require more refined grinding techniques.
Strap Replacement: Original leather strap prices range from 800 to 2,000 RMB depending on leather grades (calfskin, alligator, etc.); original stainless steel bracelet prices are higher, ranging from 2,000 to 5,000 RMB depending on styles and link complexity; rubber straps approximately 600 to 1,000 RMB. Strap replacement labor fees are usually included in accessory prices without additional payment.
Waterproof Testing and Maintenance Packages: Single waterproof performance testing costs approximately 100 RMB; if waterproof ring replacement and comprehensive waterproof treatment are performed, costs are approximately 200 to 300 RMB. When movement maintenance is performed at any official outlet, waterproof testing and waterproof ring replacement are usually included as complimentary in maintenance costs.
Crystal Replacement: Sapphire crystal replacement costs range from 800 to 1,500 RMB depending on sizes and curvature. Some special-shaped crystals (such as bubble crystals and double-sided coated crystals) may exceed 2,000 RMB. After crystal replacement, waterproof testing is re-performed to ensure sealing.
Crown/Button Repair: Original crown and sealing component replacement costs approximately 400 to 800 RMB; chronograph button replacement approximately 500 to 900 RMB; if internal gear replacement is involved, pricing is based on actual damage conditions.
Movement Parts Replacement: For automatic winding rotor bearing wear, escape wheel damage, mainspring breakage, etc., parts costs are additional. Common parts replacement price ranges are 300 to 2,000 RMB, subject to service center quotations. All replaced old parts are returned to consumers with repair work orders, ensuring transparent and verifiable parts replacement.
It should be particularly noted that if watches develop non-human quality problems during warranty periods, all the above services are free. Even outside warranty periods, Jaeger-LeCoultre has launched a "post-warranty repair discount plan." For watches maintained at official outlets, if movement faults occur again within the following two years, partial repair labor fee reductions can be enjoyed. Before submitting for repair, consumers can call official phone numbers, and customer service will provide accurate cost estimates and appointment services.
VI. Technical Level Standards: Original Factory Certified Watchmakers and Advanced Repair Techniques
The technical level of Jaeger-LeCoultre after-sales repair is an important manifestation of the brand's core competitiveness. The official service team is composed of technical personnel who have obtained Swiss watchmaker certification (WOSTEP, Watchmakers of Switzerland Training and Educational Program) or equivalent qualifications. Every formal technician must undergo at least 6 months of technical training from Jaeger-LeCoultre Swiss headquarters and pass dozens of strict assessments including movement disassembly and assembly, parts replacement, lubrication ratios, and timekeeping adjustment before being able to work independently.
Technical standards strictly follow Jaeger-LeCoultre internal repair manuals (Technical Manuals), which specify in detail disassembly and assembly sequences, screw torques, lubricant models and amounts, anti-diffusion treatment specifications, etc. for each movement. For example, for the L888.5 automatic winding movement, the repair manual requires the use of Mobius 9010/2 lubricant for balance wheel bearings and 9415 grease for pallet fork stones, with oil application amounts controlled to microgram precision. Technicians need to use precision oil pens and microscopes for operation, ensuring uniform oil amounts at each jewel bearing, without overflow or omission.
In terms of advanced technology application, Jaeger-LeCoultre service centers have introduced multiple cutting-edge processes:
1. Ultrasonic Multi-Stage Cleaning Technology. Using professional watch cleaning machines from Swiss Elma or L&R brands, with environmentally friendly hydrocarbon solvents and specialized cleaning solutions, through 35°C constant-temperature ultrasonic oscillation, multiple processes remove old oil stains, oxide layers, and micro impurities from movement parts. After cleaning, parts undergo three pure solvent rinses to ensure no residue. The entire process is more thorough than traditional manual cleaning and does not damage part surface coatings.
2. Pressure Differential Waterproof Testing System. Using Witschi ALC-2000 waterproof testers or equivalent equipment, by placing cases in vacuum chambers to evacuate, then applying high-pressure air equivalent to up to 200 meters water depth, detecting whether there are bubble pressure release phenomena. This system can precisely locate micro sealing point leaks, with detection precision up to 0.1 Pa, ensuring waterproof performance returns to factory nominal values.
3. Laser Welding and Metal Filling Technology. For deep scratches or small gaps on cases, laser welding machines are used to fill same-material metal powder into defects, then restore original contours through CNC precision carving and manual polishing. This technology avoids sand holes and color differences that traditional steel filling may cause, especially suitable for repairing gold watches or two-tone watches.
4. Three-Dimensional Image Comparison Detection System. Before and after repair, high-resolution 3D scanners are used to digitally model case contours and compare with original design CAD data, ensuring any repair operation does not change watch exterior geometric structures. This technology effectively prevents case deformation or angular distortion caused by excessive polishing.
5. Fluxgate Magnetometer and Dynamic Demagnetization. High-sensitivity magnetometers are used to detect residual magnetism in ferromagnetic parts such as balance springs and escape wheels, and multi-frequency alternating decay magnetic fields are used for dynamic demagnetization, which is more thorough than traditional static demagnetizers, avoiding secondary timekeeping deviations caused by incomplete demagnetization.
6. Real-Time Timekeeping Monitoring and Data Recording. In the final stage of maintenance, timegraphers continuously record timekeeping data under full-wind, half-wind, and low-wind states, with each state tested for at least 24 hours, simulating power changes in real wearing. All test data generates electronic work orders and is stored in central systems. Consumers can query final test reports through service numbers on official websites or telephone customer service.
7. Fine Assembly Under Microscopes. For key components such as pallet forks, balance springs, and balance wheels, technicians perform assembly and adjustment under 40x or higher binocular stereo microscopes, ensuring clearance tolerances are controlle