Good clock replacement: reliable quartz movement for accurate timing. Simple design, easy to use. Energy efficient. Ideal for repairing, replacing, or creating clocks. Wide application: suitable for use in home clocks, three-dimensional embroidery, craft clocks, frameless wall clocks, clockwork projects, and more. Perfect for DIY clock kits and ideal as replacement movement parts for quartz wall clocks. Type: Clock Movements Size: Total shaft length 20 mm (0.8 inches), thread length 14.6 mm (0.57 inches). Jump second movement fits clock panels 9–13 mm (0.35–0.51 inches) thick. Rated voltage: 1.5V Battery life: up to 12 months with UM-3 battery Battery required: 1.5V AA carbon battery (not included) Instructions: 1. Attach the clock movement to the surface. 2. Install with the 12 o'clock position as standard. When installing, ensure the hour and minute hands are parallel. 3. Insert the battery after pulling out the positioning pin from the back of the movement. (Do not insert the battery before removing the locking pin.) Material: Plastic + Aluminum Color: Black + Golden Package contents: 2 x Quartz clock movements 14 x Clock hands 2 x Sets of accessories Note: Light and display settings may cause slight color differences between the image and actual item. Measurement error allowed is +/- 1–3 cm.