Movement:

• Mechanical chronograph movement Valjoux 7750 with power reserve indicator module, 28,800 A/h
• Self-winding movement
• Finished components (perlage-finished bridges, blued screws)
• Nivarox-1 balance spring, glucydur balance, Beryllium plateau
• Nivaflex 1 mainspring, Incabloc shock protection
• Shock proof according to DIN 8308
• Antimagnetic according to DIN 8309

Case:

• Stainless steel, DIN material no. 1.4435, polished
• D 41.5 mm, H 15.0 mm
• Sapphire crystal
• Screwed down caseback with sapphire crystal
• Crown with double o-ring gasket and screwable
• Pushers with double o-ring gasket
• Waterproof to 100 m
• Safe below atmospheric pressure

Dial:

• Matte black, indexes and numerals with white, inactive luminous colour
• White hours and minutes hands, with white, inactive luminous colour
• Seconds hand, power reserve indicator and white hacking seconds hand

Functions:

• Hours, minutes, small seconds
• Date indication at 3 h
• Power reserve indicator at 3 h
• Chronograph central seconds, minutes in counter circle (at 12 h), hours in counter circle (at 6 h), stopping time max. 11 hours, 59 minutes and 59 seconds
• Tachymeter
• Pulsometer

Bracelet:

• Black calf leather strap with white seam and polished stainless steel clasp
• Variants with solid stainless steel bracelet and butterfly folding clasp

Warranty:

• 2 years

Production:

• Production Until 2018
• Successor Sinn 917