Never be left guessing again. Thin, light, and tough, with its simple tide index the ED01-Tide will let you know when its good to go. MOVEMENT: Digital module with simple tide and tide prediction, moon phase, calendar, alarm, countdown/heat time, chronograph with 30 lap recall, and light functions. CASE: 40MM polycarbonate case with raised bezel, hardened acrylic crystal. Water resistant up to 10 ATM / 100 meters / 300 FT. BAND: Polyester nato style band with custom stainless steel buckle and velcro closure