VIEW CLOSE UP | VIEW SIDE | VIEW BACK | VIEW NIGHT CLOSE UP | Technical Specifications – Model DC57 Movement: Valjoux 7750 self-winding, mechanical movement 25 jewels 28,800 bph Shockproof according to DIN 8308 Anti-magnetic according to DIN 8309 DC57 functions: Hour, minute, permanent small sweep second Day/Date window with new, modified position Chronograph: 12-hour counter and 30-minute counter on sub-dials, central 60-second counter Case: Stainless steel, nickel-free, bead-blasted Ice-hardened to guaranteed 60 HRC or 710 Vickers Integrated anti-magnetic inner cage, anti-magnetic to 80,000 A/m or 100 mT Sapphire crystal with anti-reflective coating on both sides, AR coating on the underside only, on special request Crystal gasket resistant to UV radiation Solid screw back with O-ring Viton™ gasket All gaskets made from Viton™ which offers a premium chemical resistance and which is superior to most other materials used in the watch industry New patented crown and pusher system, crown stem and pusher shafts are machined with minimal tolerances and leave almost no gap between pusher/crown and case, but nevertheless do not scratch. Crown and pushers are also equipped with a permanent lubrication cell which eliminates friction. Screw-down crown with protective shoulders Crown, pushers, and tubes hardened to 60 HRC Water resistant to 10 bars/100 metres according to DIN 8310 Crystal has a secure fit even in case of a sudden negative pressure Dial: Dial completely coated with luminous compound Luminova™ C1 (white) Numbers, hour markers, and triangle at 12 painted in matt black Hands: All hands including the chronograph hands painted in matt black Strap and Bracelet: The watch is fitted with a high quality, water resistant leather strap (available in black or brown with contrast stitching). Dimensions: Diameter: 40.00 mm Overall height: 13.70 mm Lug width: 20.00 mm Weight without strap: 86 grams Warranty: 2 years.