Swiss Made SW221-1 automatic movement, 26 jewels, 28,800 oscillations Curved sapphire crystal, anti-reflective coating on both sides Date display Case made of 316L stainless steel Bracelet made of solid 316L stainless steel Screwed case back Water resistance: 5 ATM / 50 m Display case back Case diameter: 42.5 mm Case thickness: 9 mm Bracelet width: 20 mm Dial: Silver with indices and Arabic numerals Weight: 160g