The Chrome Endurance 125 Time and Tide Clock features a combination quartz time and tide clock movement which averages the Atlantic lunar tide cycle. The easy to read dial, maintenance free finish and weatherproof construction make this generous size tide clock one of our most popular. The tide sector is calibrated for the east coast of the United States. (Note: The clock will work for other tidal bodies of water but will need to be re-set more frequently). This chrome time and tide clock is part of the extensive Endurance I Collection which features a maintenance-free, ultra-hard finish guaranteed to NEVER tarnish. The patented Slide-n-Lock Mounting System eliminates the need for visible mounting screws and is easily removed for adjustments and battery replacement. The Chrome Endurance 125 Time and Tide clock is splash resistant and has a limited lifetime warranty.