Rip Curl Men's 'Rifles Midsize Tide' Quartz Plastic and Polyurethane Sport Watch, Color:Blue (Model: A1124-BLU) Versatile polyurethane tide watch Individually water resistance tested for durability in a marine environment Quartz Movement Case Diameter: 35mm Water Resistant To 100m (330ft): In General, Suitable for Swimming and Snorkeling, but not Diving