Sinn EZM 1

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Main Article: Sinn EZM

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

Overview

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.

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