Light, strong, and durable, the brass Endurance II 115 Time and Tide Clock features a traditional front-opening bezel with a combination quartz time and tide clock movement. The easy-to-read dial displays a standard 12-hour clock that tracks time to the second while a fourth red hand indicates the current position of the tide. Constructed of a high luster, maintenance-free brass, this midsize porthole time and tide clock is guaranteed not to tarnish. Midsize dial Time & tide quartz movement Red tide indicator hand is calibrated to the Atlantic lunar tide cycle Note: Tide calibration for other tidal bodies of water will need to be reset frequently, e.g., Pacific Ocean & Gulf of Mexico Maintenance-free brass finish Beveled glass crystal Traditional porthole front-opening bezel Mounting methods for boat or shore Wood base in mahogany or black finish available separately (115SM & 115SB) AA battery, instructions & mounting hardware included Lifetime warranty