SINN presents EZM 13.1, a traditional yet technically advanced diving mechanical self-winding chronograph watch.

This 41mm watch in steel is equipped with the automatic chronograph movement SZ02. It comes with a matte black dial with an optimal design.

To enable the elapsed times to be read quickly and intuitively, the EZM 13.1 features a 60-minute counter at 6 o’clock instead of a 30-minute counter. To enable clearer readability, the Arabic numerals have been omitted on the EZM 13.1. This adds an optical enhancement to its technically functional focus.

SINN EZM 13.1 is water resistant up to 500 meters. For the highest levels of mechanical stability and durability against external influences, the EZM 13.1 features Magnetic Field Protection up to 80,000 A/m, Ar-Dehumidifying Technology and Temperature Resistance Technology. The independent classification company DNV verifies and certifies the water resistance and pressure resistance of the EZM 13.1 as well as its functionality in accordance with the European diving equipment standards.

Technical details

Model: SINN EZM 13.1

SINN Movement SZ02
Self-winding mechanism
26 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Anti-magnetic as per DIN 8309

Case made of stainless steel, bead-blasted
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened, nickel-free
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Waterproof and pressure-resistant to 500 m diving depth (= 50 bar), certified by DNV
According to the technical demands for the diving norm DIN 8306
Tested based on European diving equipment standards EN 250 / EN14143 and certified by DNV
Low pressure resistant

Hours, minutes, subsidiary seconds
Date display
Chronograph with 60-minute stopwatch display
Diver’s bezel with minute ratcheting and luminous key mark

SINN Technologies
SINN movement SZ02 with 60-minute stopwatch display
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Temperature Resistance Technology, therefore functionally reliable at temperatures from -45°C up to +80°C
Magnetic Field Protection up to 100 mT (= 80,000 A/m)
Captive bezel
Push-pieces with D3-System

Dimensions and weight
Case diameter: 41 mm
Band lug width: 20 mm
Case thickness: 15 mm
Weight without strap: 98 gramme

Dial and hands
Mission timer design for optimal readability
Matte black dial
Indices coated with luminescent colour
Hour, minute and second hand coated with luminescent colour

3 years