The tide clock counts down the hours until the next tide.This tracks the Atlantic's tidal area it your location and is easy to set. The case comes in your choice of blue or white. The dial is a Moore Clocks original design. The tide movement comes with a 3 year manufacturer warranty. We also offer a 30-day money-back guarantee if you are not completely satisfied with the clock. Operates off one 'AA' battery. Easy to set and maintain. Instructions for setting the tide will accompany the clock. A unique gift for the fisherman.