Material, Width316L stainless steel (brushed finish), 44 mm case back threaded stainless steel case back crystal sapphire crystal with clear double side anti-reflective coating Crown Screw lock crown with double diamond sealing system Water Resistant300 Meters/990 Feet movement all Swiss made Movement strap brown leather strap (24/22), Custom molded anti-static rubber strap (24/22), 316L stainless steel bracelet (24/22) Lug Width24mm