Good clock replacement: Ideal for repairing, replacing, or creating a clock. Simple style quartz movement: reliable performance with accurate timekeeping. Easy to install and use. Wide application: Suitable for repairing or making home clocks, craft clocks, frameless wall clocks, and more. Perfect for DIY clock projects, including clock accessories and replacement parts. Energy efficient and precise timing. Type: Clock Movements Power: 1.5V AA battery (not included) Total Shaft Length: 31mm / 1.22in Thread Length: 24mm / 0.95in Suitable for clock panels 16–21mm (0.6–0.8in) thick Instructions: 1. Attach the clock movement to the surface. 2. Install the hands according to the 12 o'clock position. 3. Insert the battery, then pull out the locking pin from the back. (Do not insert the battery before removing the pin.) Dimensions: Total Shaft Length: 31mm Thread Length: 24mm Material: Plastic + Aluminum Color: Black + Red Package Contents: 1 x Clock Movement 2 x Hour Hand 2 x Minute Hand 1 x Second Hand 2 x Rubber Gasket 2 x Metal Gasket 2 x Screw Cap 1 x Second Hand Nut Note: Light and screen settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1–3cm.