Sinn 103 St DIAPAL

It’s obvious at a glance what the 103 model series was created for: uncompromising functionality. They are designed to resemble cockpit instruments, in keeping with our company tradition. After all, the first watches we produced were mechanical aviation clocks for professional use. The patented technologies we have developed over the years are now also part of this classic Sinn chronograph.

The 103 St DIAPAL with its polished stainless steel case features a lubricant-free escapement (DIAPAL Technology). We use special combinations of materials that create no friction, even without lubrication, thus ensuring the long-term accuracy of the movement. To perfect the technical design, this model is equipped with Ar-Dehumidifying Technology. The movement is embedded in an environment that is almost completely dry. This reduces aging and prevents the crystal from fogging when exposed to sudden cold, and ensures reliable functionality and accuracy for a longer period of time. If you are looking for a traditional pilot’s chronograph equipped with a second time zone, a captive pilot's bezel and the latest technology, you will appreciate this model.

Polished stainless steel case
DIAPAL - the lubricant-free anchor escapement
5 years guarantee
Ar-Dehumidifying Technology for enhanced freedom from fogging
Second time zone on a 12-hour basis
Sapphire crystal glass
Transparent back made of sapphire crystal glass
Captive pilot's bezel with minute ratcheting
Functionally reliable from -45 °C up to +80°C
Anthracite electroplated dial
Pressure-resistant to 20 bar
Low pressure resistant

Mechanical Movement

Valjoux 7750 GMT
Self-winding mechanism
25 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Anti-magnetic as per DIN 8309

Case

Case made of stainless steel, polished
Sapphire crystal glass in front, anti-reflective on both sides
Transparent case back made of sapphire crystal glass, anti-reflective on the interior
Case back screw-fastened
Crown and push-pieces screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 20 bar
Low pressure resistant

Functions

Hours, minutes, subsidiary seconds
Second time zone on a 12-hour basis
Date display
Chronograph
Pilot’s bezel with minute ratcheting and luminous key mark

SINN Technologies

DIAPAL Technology, lubrication-free escapement
Captive bezel
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

Dimensions and Weight