Rip Curl Men's A1015-GRY Trestles Oceansearch Pre-programmed Tide Watch with Polyeurethane Band Square watch in plastic featuring contrasting pushers and perforated resin wristband with buckle closure Quartz movement with digital display Acrylic crystal dial window Features pre-programmed tide charts for 00 beaches worldwide through 2022, countdown timer, alarm, chronograph, future tide mode, and full display backlight Water resistant to 330 feet (100 M): suitable for snrokeling, as well as swimming, but not diving