Sinn EZM 1
Sinn introduced the Einsatzzeitmesser (EZM) line of special-purpose watches in 1997 with this EZM 1 and the Sinn EZM 2. It is an unusual chronograph with left-side crown and pushers and no subdials. The chronograph minute and seconds counter are centrally-located hands, along with running hours and minutes. The date is in a small window at 3 30.
The case, Reference 503, measured 40 mm in diameter and was 16.5 mm thick. It housed the Lemania 5100 chronograph movement.
- Ø 40 mm, height 16.5 mm
- Waterproof to 130 bar
- Black, indexes with white luminous material
- Hours and minutes hand with white luminous material
- Central chronograph minutes and seconds hands
- Hours, minutes
- Chronograph minutes, seconds
- Leather strap