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 Sinn's tradition. After all, the first watches Sinn produced were mechanical aviation clocks for professional use. The patented technologies Sinn has 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). Sinn uses 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.

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 screwable
• Push-pieces screwable
• Meet the technical requirements for waterproofness, as set out in standard DIN 8310
• Waterproof and pressure-resistant to 20 bar
• Low pressure resistant

Functions

• Hours, minutes, subsidiary seconds
• Date display
• Day of the week 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

Dial and Hands

• Anthracite electroplated dial
• Numbers and indices coated with luminescent colour
• Hour hand, minute hand and stopwatch second hand coated with luminescent colour

• Case diameter: 41 mm
• Band lug width: 20 mm
• Case thickness: 17 mm
• Weight without strap: 88 gramme