Quiksilver Men's Quartz Stainless Steel and Polyurethane Casual Watch, Color:Black (Model: QWMT007-BLK) Japanese movement Case diameter: 43mm Reinforced acrylic crystal Digital tide movement featuring Quiksilver's award winning deep tide system technology Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion