A light sensor automatically the illuminates the dial for easy reading in low light and shuts off when enough ambient light is in the room. Molded two step case finished in a Navy gloss blue has a protective glass lens, contrasting matte silver inside bezel ring, accurate readings along the Eastern seaboard of the United States and Europe showing actual time before each high and low tide. Great for sailors and Landlubbers alike. Requires 1 AA battery for the instrument and 3 AA batteries to power the light ( not included) Diameter 10" x 1.75" D
