product specification model: FS5445 Case Size: 44 mm Movement: Quartz Platform: The Minimalist - Mono Strap Material: Leather Strap Color: Gray Case Water Resistance: 3 ATM Case Material: Stainless Steel Case Colour: Smoke Dial Color: Gray Strap Fashion Color: Gray Interchangeable Compatibility: 22 mm Strap Width: 22 mm Closure: Single Prong Strap Buckle Strap Inner Circumference: 200 +/- 5 mm Crystal Type: Mineral Battery Type: SR621SW