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: 30mm Lug-width: 20mm Hands: Edged Hands Strap: Calf Buckle: Buckle Movement Reference: Seiko VK64 Function: Chronograph Caliber: Quartz Power Reserve: 2-3 years