====== Sinn EZM 1 ======
  *Main Article [[Sinn EZM]]

**EZM 1** (Ref. 503) was a [[Mission Timer]] produced by [[Sinn]] from [[1997]] through [[2004]].

===== Overview =====
Sinn introduced the [[Sinn EZM|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 [[pusher]]s and no [[subdial]]s. 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.


<WRAP ud ud_mod>

**Movement:**
  * [[Lemania 5100]] [[chronograph]]

**Case:**
  * [[Titanium]]
  * Ø 40 mm, height 16.5 mm
  * [[Sapphire crystal]]
  * [[Screw-in crown]]
  * [[Waterproof]] to 130 bar

**Dial:**
  * Black, indexes with white [[luminous]] material
  * Hours and minutes hand with white [[luminous]] material 
  * Central chronograph minutes and seconds hands

**Functions:**
  * Hours, minutes
  * Chronograph minutes, seconds
  * [[Date window]]

**Bracelet: **
  * Leather strap

**Production:**
  * Production [[1997]]-[[2004]]
</WRAP>

{{tag>Watch_models Sinn_EZM_models}}