The 206 St Ar

From Sinn -

Courtesy of Sinn

Hours, minutes, seconds, day, date and chronograph.  But this one goes a little bit further.  Water resistant to 300 meters, rotating bezel, and perhaps the coolest bit?  Ar-Dehumidifying Technology!
For more about that, check the factoids here -
https://www.sinn.de/en/Ar-Dehumidifying_Technology.htm

Courtesy of Sinn

Here are the pertinents, straight from Sinn -

• Case made of stainless steel, polished / satinized
• Electroplated black dial
• Tested based on European diving equipment standards and certified by DNV GL
• Pressure-resistant to 300 m diving depth (30 bar), certified by DNV GL
• Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
• Captive diver's bezel with minute ratcheting
• Sapphire crystal glass in front
• Transparent back made of sapphire crystal glass 
• Low pressure resistant

• Mechanical Movement
• • The information on the mechanical movement corresponds to the current production situation in Frankfurt am Main. Due to technical changes, it may happen in individual cases that stock items of our sales partners deviate from this information. (further Information)
  • Valjoux 7750
  • 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 / satinized
  • 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 300 m diving depth (= 30 bar), certified by DNV GL
  • According to the technical demands for the diving norm DIN 8306
  • Tested based on European diving equipment standards EN 250 / EN14143 and certified by DNV GL
  • Low pressure resistant

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

• SINN Technologies
• • Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
  • Push-pieces with D3-System
  • Captive bezel

• Dimensions and Weight
• • Case diameter: 43 mm
  • Band lug width: 22 mm
  • Case thickness: 17 mm
  • Weight without strap: 95 gramme

• Dial and Hands
• • Electroplated black dial
  • Indices coated with luminescent colour 
  • Hour, minute and second hand coated with luminescent colour

• Warranty
• • 3 years