A most handsome Tide and Time Clock features a highly accurate quartz movement in a solid polished and lacquered 5¼" brass case. The 3¾" white face, in addition to regular clock hands, has a red sweep second hand and blue tide hand indicating the number of hours remaining to high or low tide. 2¾" deep with 5½" rear flange drilled for wall mounting. Uses 1 AA battery(included). Because of the more regular tide cycles, this clock can only be used on the east coast.