Game Time Boy's 'Rookie Black' Quartz Metal and Canvas Casual Watch, Color:Black (Model: COL-ROB-OSU) Durable Solid Alloy Metal Case, with Stationary Polycarbonate Serrated Bezel, Solid Stainless Steel Case back/Crown, a Durable Polyurethane Strap with Stainless-Steel Closure Durable mineral crystal protects watch from scratches, water resistance of 99 Feet/30 Meters/3 ATM, & all with a Limited Lifetime Warranty! Japanese-quartz Movement Case Diameter: 26mm Water resistant to 30m (100ft): in general, withstands splashes or brief immersion in water, but not suitable for swimming or bathing