Okay, here's my 1997 Sinn, model 103 Ti Ar, pilot chronograph:
- pure titanium case and band
- screw-down crown
- antimagnetic
- shockproof
- 20 bar/200m water resistant
- saphire crystal
- saphire screwback
- dry cartridge system for extended service interval, with color indicator window
- Argon gas filling to enable extended service interval
- modified, automatic Valjoux 7750 movement
- temperature and position-adjusted, regulated, certified chronometer
Updated/modified in 2006:
- updated dry cartridge installed
- chronograph second hand replaced with orange type (was white before)
- tritium dial replaced with non-active dial with Superluminova indices and hands (glows brighter and does not fade over the years like tritium. Also, indicesm numerals and hands do not turn beige over time; also less hazardous to watchmaker.)
I blurred the serial number. Nobody's business...
Note the dry cartridge indicator window. Since condensation and remaining moisture in air is an issue with all conventional, mechanical watches, this watch is filled with Argon gas. Even though the Argon gas will leak out over time, the combination of the gas filling and the moisture-absorbing dry cartridge (filled with copper sulfate), enables extended service intervals. A mechanical watch needs usually to be serviced (take apart, cleaned, lubed, adjusted) every two to three years. The Sinn can go twice as long. Service is due when the color in the cartridge window has gone from white to blue (saturation point). After 5 years the cartridge was not yet near the saturation point. Sinn has also developed a lube-less watch escapement (DIAPAL), which is available in some of their latest model.