A contemporary take on the traditional diving chronograph. The Sinn 206 St Ar harks back to the vintage 203 St und 203 Ti Ar models from 1995, in which Ar dehumidifying technology was used for the first time. To ensure optimum readability even in challenging visibility, this diving chronograph features a black dial, which also gives the watch a mechanical, instrumental look. This design, featuring a black leather strap with decorative red seams, suits this look down to the ground.

Classic look meets modern technology

A further throwback to the vintage specimen is the design of the push-piece, which recreates the look of the screwable push-pieces on the original models. But of course the smart D3 system featured by the 206 St Ar means that screwable push-pieces have long been a thing of the past. This makes today's chronograph functions easily accessible and easy to operate at any time.


  • Size (Ø): 43mm
  • Strap length: 216mm
  • Strap width: 22mm
  • Weight: 120g
  • Material: stainless steel (polished/satinised), leather* sapphire crystal glass (anti-reflective on both sides)
  • Colour: stainless steel / black


  • Valjoux 7750 mechanical movement
  • 25 ruby bearing jewels
  • 28,800 semi-oscillations per hr.
  • Self-winding
  • Power reserve minimum 46 hrs.
  • Pressure-resistant up to 30bar**
  • Ar dehumidifying technology for enhanced functionality and zero fogging
  • Screw-fastened case back
  • Transparent case back of sapphire crystal glass, (anti-reflective on one side)
  • Screw-in crown
  • Anti-magnetic to DIN 8309
  • Chronograph function
  • Second-stop mechanism
  • Diver's bezel with luminous key mark and minute ratcheting
  • Analogue time display
  • Hours, minutes, small seconds hand, date, day
  • Luminous indices and hours, minutes and seconds hands
  • Pin buckle
  • 3-year manufacturer's warranty***
  • Made in Germany

Included in delivery

  • Sinn 206 St Ar Diving Chronograph

*Contains non-textile parts of animal origin.

**Fulfils the technical requirements of DIN 8310 for waterproofness, certified by DNV GL, tested and certified to European diving equipment standards, resistant to negative pressure. The leather strap is not suitable for diving.

***More information can be found at: sinn.de/en/Customer_Information.htm