ITEM NAME:DIY Silent Classic Quartz Watch Wall Clock Movement Mechanism Parts OZ FT Brand new and high quality Can be used to repair, assemble and replace clocks Suitable for DIY and watchmakers Movement Color: Black Movement Size: about 55 x 55 x 16mm Main Spindle Length: 13mm Thread Size: 7mm Mode: leap second 1 x AA battery.Suitable for DIY and watchmakers. Thread Size: 7mm. Hour Hand: 57mm. Mode: leap second. Can be used to repair, assemble and replace clocks.