Sinn 903 Serie Bedienungsanleitung Seite 11

Advancements in endurance testing
take, for example, the absolutely condensation-free, anti-reflective, german
submarine steel diving watch – made possible by hYdRo technology. other
examples include a chronometer chronograph fashioned from a 22-carat gold
alloy that is as hard as stainless steel and a chronometer with a magnetic
resistance of up to 80,000 a/m. there are also watches with a clockwork
mechanism optimally protected from aging by an inert gas and integrated
dehumidifying capsule. the list would not be complete without mentioning
the development of mission timers (einsatzzeitmesser or ezM in german)
for firefighters, for special police units and border patrol guards as well as
temperature Resistance technology to keep mechanical watches performing
at temperatures ranging from − 45 °C to + 80 °C. this technology has proven
its worth in the ezM 10 teStaF model, for example, used as part of the official
approvals procedure for airbus helicopters (formerly eurocopter) eC 145 t2
high-performance helicopter. hot and cold climate tests and high-altitude
experiments were carried out in the deserts of the uSa, the Rocky Mountains
and the frozen wastes of Canada. the watch was worn unprotected, outside
the pilot's overall, during cold climate tests at temperatures reaching − 45 °C.
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