This is a quartz sub assembly by Instrument Services, Inc. This replaces the inner of your original clock. Your hands, face, case, lens, and bezel are put onto this new dial plate! This quartz movement is assembled right in our shop in the USA! This will only work on an original clock.ASSEMBLED RIGHT HERE IN OUR SHOP IN THE USATHESE QUARTZ MOVEMENTS HAVE BEEN USED IN CAR CLOCKS FOR ALMOST 40 YEARS