Freestyle USA Stealth Tide 3.0 Sport Watch Japanese Digital-Quartz-movement, tide data for 75 beaches worldwide for 15 years, display of present/future tide date (date, time, height), programmable beach capability with 3-hour off-set Highly shock-resistant polycarbonate watch case; Optional big time with shark fin animation, time, day, dual time zone, chronograph, preset heat timer: 15, 20, 25, 30, 35 increments, 2 alarms, night vision backlight Polyurethane strap with adjustable buckle Limited lifetime warranty (till death do us part) Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving