Revision for Vintage Quartz Chronographs. Quartz chronographs are analog stopwatches with 1 or more pushers to start, stop and reset elapsed time keeping functions for up to 12 hours at a time. Quartz chronographs are powered by a battery or solar cell, in which the timekeeping is regulated by a quartz crystal that vibrates at a certain frequency.

We recommend an overhaul every 3-5 years, depending on the age and service history of the watch, as well as its general condition. If you purchase a vintage watch for which you do not know the service history, we recommend that you have it serviced as soon as possible to ensure its functionality but above all to protect your investment.

We also recommend the replacement of the battery at least every 2 years.

General overhaul including cleaning, disassembly and reassembly, application of grease and oil, including:

• Cleaning of wristband, clasp, case, dial, hands, etc.
• Disassembly of the movement, professional cleaning of all parts
• Reassembly of the movement, including oiling according to the recommendations and guidelines of the manufacturer
• Greasing of rubber seals on stems, pushers and case back seals with water-repellent watchmaker grease.

In addition and on request / depending on the current condition of the watch, we offer the following (prices are to be determined separately):

• Replacement of the glass (replacement glass available separately)
• Replacement of the case gasket seal (gasket seal sold separately)
  
• Replacement of the gasket seals on crowns (rubber gasket seal sold separately).

Please note that should spare parts be required, you will be informed of their avalability and cost. Spare parts will be billed separately, and are not part of the present service.

The revision described is reserved exclusively for vintage quartz chronographs. The service itself does not include a water resistance test: Vintage watches are usually not water resistant. Many were never water resistant, others are not anymore. Over the decades, seals become porous so that water can penetrate the case. Even if all seals are replaced with new ones, the metal surfaces on which they work can be pitted, cracked or uneven. All watches that were once designed for use in water should be tested for water resistance every so often. A water pressure resistance test can be performed upon request at no cost, yet we cannot guarantee that the watch will pass the test successfully even after a complete service.