Diving Watch 203 ARKTIS

The first diving chronograph with Temperature Resistance Technology.

Special characteristics Description Technical data

Information

Case made of stainless steel, polished
Blue electroplated dial, UV resistant
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Functionally reliable from -45 °C up to +80°C
Sapphire crystal glass
Solid back (transparent back made of sapphire crystal optional)
Pressure resistant to 300 m diving depth (30 bar)
Low pressure resistant

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The 203 ARKTIS chronograph is our first diving watch to feature Temperature Resistance Technology. This means that it is guaranteed to run and function reliably even at exceptionally low temperatures.

This watch passed its Arctic endurance test on the wrist of extreme diver Mario M. Weidner – with flying colours! The 203 ARKTIS survived not only all the dives in the icy water of the Arctic Ocean, also sessions in the sauna on-board of the research vessel. However, the true test of the watch's quality lay in coping with the extreme temperature fluctuations between those found in the water (freezing point) and those on land (up to –25 °C) which represents a real challenge for a watch worn outside a thermal diving suit.

Each individual piece the diving watch 203 ARKTIS undergoes function testing by Sinn at a temperature range between –45°C and +80°C, which is very unusual for mechanical watches.

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
- Case made of stainless steel, polished
- Sapphire crystal glass in front, anti-reflective on both sides
- Case back screw-fastened
- Crown screwable
- Push-pieces screwable
- Water-resistant as per DIN 8310
- Pressure resistant up to 30 bar (= 300 m water depth), 20 bar with transparent case back
- 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
- Temperature resistance technology, therefore functionally reliable at temperatures from -45 °C up to +80°C

Dimensions and Weight
- Case diameter: 41 mm
- Band lug width: 20 mm
- Case thickness: 16 mm
- Weight without strap: 90 gramme