Quartz Cuckoo Movement 80 mm is a quartz cuckoo movement that is supplied with plastic weights, chains, a plastic pendulum stick (leaf not included), a switch plate, a cuckoo door, mounting hardware and hands. Quartz Cuckoo 80 mm measures 3 1/4" x 2 3/4" x 2 13/16"deep and has a minute hand length of 38 mm ( 1 1/2"), suited for a dial diameter 80 mm (3 1/8"). The unit housing the cuckoo bird measures 3 1/4" x 1 3/8" 2 13/16" deep. Quartz Cuckoo 80 mm uses 2 C batteries that can be purchased separately.