Sinn 303

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Sinn 303
Sinn 303 Silver Ty
Sinn 303 Silver 12

Sinn 303 is a model range of motorist chronographs by Sinn.

Movement:

Self-winding movement Valjoux 7750, 28,800 A/h
25 jewels
Nivarox 1 hairspring, Glucydur balance wheel, Berylium plateau
Mainspring Nivaflex 1, Incabloc shock protection
Shock proof according to DIN 8308
Anti-magnetic according to DIN 8309

Case:

Stainless steel, DIN material No. 4435, polished, tachymeter ring satin-finished
Ø 41 mm, height 16.5 mm
Sapphire crystal oben, with anti-glare treatment on the inside; screwed bottom
Undetachable stainless steel turning bezel with minute ratcheting
Screw-in crown with double O-ring seal, pushers with double O-ring seal
Waterproof to 200 m
Safe below atmospheric pressure

Dial:

Black / silver galvanised, guilloché, indexes coated with special long-lasting, luminous paint, fine minute scale
External Tachymeter dial ring with black engraving, maximum speed limits for vehicle tires in red
Model 303 Silver 12: External 12 hours ring with black engraving
Dates at 3 o'clock, day of the week in German at 3 o'clock
Chronograph: Central second, minute in totaliser (at 12 o'clock), hour in totaliser (at 6 o'clock), stop time max. 11 hours, 59 minutes and 59 seconds

Bracelet:

Black Russian leather strap with polished stainless steel clasp
Optional with massive stainless steel bracelet and milled folding clasp, additional 30 mm Overall prolongation

Warranty:

2 years