Case Shape : Round Material : Stainless Steel Glass: Scratch-resistant sapphire crystal, double anti-reflective coating on both sides Caseback : Screw-down Size: Φ41.00mm Waterproof: 30 ATM water resistant Features : Screw down crown dial Color: Black lacquer “Polish” Indexes : Painted Arabic numerals and indexes Hands: Silver “polished” hands Features : Swiss Super-LumiNova? Movement & function Movement type : Automatic Caliber: L888 Caliber : Self-winding mechanical movement, 25,200 vph, 64 hours power reserve Functions : hours, minutes, seconds, date strap Color : Black Buckle: Triple safety folding clasp, push-button closure