QBC-22 Quartz Watch Impulse and Button Battery Checker. This is a multi-purpose watch checker. It checks the impulse of a quartz watch movement (both in and out of the watch casing), as well as the voltage of the movement's button battery. Can be used on both two or three-hand quartz movements. All units included in the listing have been tested with power and are fully functional in both battery testing and impulse testing. Instructions included. A pair of AAA batteries will also be included with each item purchased for no additional charge.