Sinn 103 A Sa B Pilot Watch

Sinn 103 A Sa B Pilot Chronograph Watch : Best Watches under $5000

The Sinn 103 A Sa B is a traditional pilot’s chronograph with blue and silver electroplated dial limited to 500 units. The technological features of the watch demonstrate its suitability for everyday use. For example, Ar-Dehumidifying Technology guarantees increased functional reliability and freedom from fogging.

The captive pilot’s bezel with minute ratcheting features a luminous triangular main marker. Indices and the stopwatch hour, minute and seconds hands are coated with luminous paint, which enables perfect readability – even at night. The chronograph features a polished stainless-steel case and sapphire crystal glass, which is also used for the transparent back.

The watch is resistant to low pressure, pressure-resistant up to 20 bar, shock-resistant and anti-magnetic. Being an exclusive edition, the 103 A Sa B is limited to 500 units. To match the blue electroplated dial, the watch comes with a blue cowhide strap with alligator embossing and white contrasting stitching as well as an gray textile strap as part of a set in a fine case. This allows the wearer to change the strap to suit the occasion or purpose.

Technical Details:

Mechanical Movement

  • Valjoux 7750
  • Self-winding mechanism
  • 25 bearing jewels
  • 28,800 semi-oscillations per hour
  • Seconds stop function
  • Shock resistant as per DIN 8308
  • Anti-magnetic as per DIN 8309


  • 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
  • Pressure-resistant up to 20 bar
  • Low pressure resistant


  • Hours, minutes, subsidiary seconds
  • Date display
  • Day of the week display
  • Chronograph
  • Pilot’s bezel with minute ratcheting and luminous key mark

Find out more –