The Bluewater Quartz Tide and Time Clock has a 3.75" dial, a 5.5" base and is 2.88" deep. It exhibits precision quartz clock and tide clock movement that averages the lunar tide cycle. It weighs 11 oz. The tide sector is calibrated for the east coast of the United States. It features a precision molded high impact black styrene case with a hinged, glare resistant matte finished bezel and glass crystal. A knurled brass locking lug is solidly constructed, making movement and battery access a snap. The modern splash resistant case is not susceptable to corrosion and requires little maintenance. Special features include: splash resistant "O" ring seal; easy access hinged bezel; corrosion proof case; scratch resistant glass crystal; secure battery clip for open ocean security. It comes with complete instructions, mounting hardware, a fresh battery and a limited lifetime warranty.