This time gauge is the highest quality available on the market today - bar none! It is the only substantiated laboratory tested gauge that has no equal. Not that you'll need it, the clock is waterproof to 165 feet. It features a stainless steel chrome case with a black face, white hands and numbers. Clock features a precision Citizen movement. The clock mounts on any 1/4 inch screw or bolt, works great on switch housing screws or windshield acorn nuts.