Weems & Plath 220300 Chrome Plated Atlantis Time & Tide Clock

Combination quartz and tide clock movement which averages the Atlantic lunar tide cycle. The tide sector is calibrated for the east coast of the United States. Uses a AA battery. (Note: The clock will work for other tidal bodies of water but will need to be re-set more frequently.) Dial: 4 . Base: 5-1/2 . Depth: 2-7/8 .