Handsome Brass Tide Clock will keep you from running aground whether you go boating or fishing. Features high tide, ebb tide falling, low tide and ebb tide rising indicators as well as second hand. Working instrument for East coast; west coast tide patterns require weekly adjustments. Brass-cased clock is handsome sitting on your desk in wood base, sold separately, or hanging on the wall. 7" diameter x 3 1/4". Requires 1AA battery, not included. Makes an unique men's gift for your favorite fisherman, boater, sailor or waterman.