- Case made of titanium, bead-blasted
- Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
- Captive pilot's bezel with minute ratcheting
- Second time zone on a 12-hour basis
- Sapphire crystal glass
- Transparent back made of sapphire crystal glass
- Pressure-resistant to 20 bar
- Low pressure resistant
The models in Sinn's 103 series make it instantly clear what these timepieces were created for: uncompromising functionality. Following company tradition, the design of these watches reminds one of the instruments in an airplane cockpit. After all, the first timepieces by the company's founder were mechanical airplane cockpit clocks for professional use. Model 103 St Sa is equipped with a high-domed, scratch-proof sapphire crystal glass with anti-reflective coating on both sides and has a transparent back made of sapphire crystal glass.
Technical details
Self-winding mechanism
25 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309
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
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 20 bar
Low pressure resistant
Second time zone on a 12-hour basis
Date display
Chronograph
Pilot’s bezel with minute ratcheting and luminous key mark
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Band lug width: 20 mm
Case thickness: 17 mm
Weight without strap: 69 gramme
Numbers coated with luminescent colour
Hour, minute and stopwatch second hand coated with luminescent colour