Inspired by the great Vintage Style Chronographs from the 1940s. Case Material: 316L Diameter: 38mm Thickness: 11mm Crystal: Sapphire Cyrstal Case back: Solid case back Water Resistance: 50mm Lug-width: 20mm Hands: Edged hands Strap: Calf Buckle: Buckle Movement Reference: 2201RS9 Function: Chronograph Caliber: Quartz Power Reserve: 2-3 years