Sinn - 103 ST SA

The pilot watches 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-resistance sapphire crystal glass with anti-reflective coating on both sides and has a transparent back made of sapphire crystal glass.
This watch is also available with Ar-Dehumidifying Technology as an option.

Mechanical Movement

• Concepto C99001
• 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
• Captive bezel
• Optionally: Ar-Dehumidifying Technology for enhanced freedom from fogging

Dial and Hands

• Matte black 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