LEGEND DIVER | 39 mm | AutomaticSelf winding mechanical movement (Caliber L888. 6), beating at 25,200 vibrations per hour, with a monocrystalline silicon balance spring and a power reserve of up to 72 hours. COSC certified chronometer. 39mm stainless steel case with a thickness of 12. 7mm. Screw down case back engraved with the diver emblem. Water resistant up to 300 meters (30 bar). Scratch resistant sapphire crystal with multiple layers of anti reflective coating on both sides.