EZM 13.1
The mission-timer chronograph for divers: left-crown layout, central elapsed minutes, real depth rating.
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Story & heritage
The EZM 13.1 continues Sinn’s professional mission-timer line as a certified diver’s chronograph. WatchBuys lists it as an EZM certified diver’s chronograph with 500-meter water resistance and the Sinn SZ-02 calibre.
It occupies the heavy-duty end of the EZM family: more complex than the EZM 3, but still organized around operational readability.
Materials & craft
The 41.5 mm matte stainless-steel case uses sapphire crystal, solid back, inert gas filling, copper sulphate capsule, SZ-02 automatic chronograph calibre and 80,000 A/m magnetic-field protection. The left-side crown and pushers keep the timing controls away from the wrist.
How to choose & style
This is the EZM for someone who wants chronograph utility but refuses decorative pushers. Keep it on silicone for the full diver profile; on textile it becomes a serious, slightly stealthy field chronograph.
