Time for a new clock. Clock can be set in either 12 or 24 hour format. Accuracy within 1 minute a year. Lithium replaceable battery for back-up so it will not loose time if power is lost. Red, Blue, or Green LED display. Mounts in a standard 2-1/16" hole. Uses #2032 battery. Limited lifetime manufacturer's warranty. Made in the USA.  

NOTE: This gauge fits Peterbilt and Kenworth models; 2005 and older. Also fits Freightliner, International, Mack, Western Star, and Volvo models with 2-1/16" gauges on the dash.