Technical Specifications - Model DA37 Movement: -ETA 2836-2, self-winding, mechanical anchor movement -25 jewels -28,800 bph -Shockproof according to DIN 8308 -Anti-magnetic according to DIN 8309 -Decorated with Geneva stripes and "perlage" DA37 functions: -Hour, minute, permanent central small sweep second -Day/Date window with new, modified position -Dial completely coated with non-radioactive luminous compound Case: -Stainless steel, nickel-free, bead-blasted -Ice hardened to 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, available 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 supersedes most other materials used in the watch industry -Permanent lubrication of crown via lubrication cell -Screw-down crown with protective shoulders, crown tube screwed into the case for easy maintenance ("System Damasko") -Crown, stem, and tube 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, hours makers, and triangle at 12 painted in matt black Hands: -All hands painted in matt black Strap: -Hand made, water resistant, and silicone rubber lined black leather strap -Bead blasted steel buckle Dimensions: -Case diameter: 40.00 mm -Overall height: 11.20 mm -Lug width: 20.00 mm -Weight without strap: 72 grams Warranty: 2 years.