Hollow mechanical movement automatic mechanical men's watch $ 18.33 Waterproof: no Movement type : Machinery Dial diameter: 41mm Thickness: 12mm Crown Type: Flat Top Conical Crown Bottom type: through the bottom Mirror material: mineral tempered glass mirror Buckle style: pin buckle Buckle material: stainless steel Strap material: silicone Dial shape : round Case material : stainless steel