• Caybats quartz clock mechanism for clock repair and adjustment. • Dimensions: 5.5 x 5.5 x 3.2 cm, with a 1.6 cm shaft. • Ideal for panels up to 4 mm thick. • Compatible with manual clocks, frameless photographs, and three-dimensional embroidery. • Operates with one AA battery (not included), no need for wires. • Silent design to avoid unnecessary noise. • Note: Check the size before purchasing. Does not include hands or batteries.