Melody effect: the chiming pendulum movement plays the Westminster melody on the hour and automatically silences the chimes after 9 PM until 6 AM. Practical tools for you: these pendulum trigger clock movement replacement parts are suitable for designing and creating your own pendulum clock, allowing easy replacement and customization. Please note that the hands are made of aluminum; avoid applying excessive pressure during installation to prevent bending. Type: Quartz Pendulum Trigger Clock Movement Chime Melody Kit Pendulum clock movement size: total shaft length is 17 mm (0.67 inch), thread length is 9.7 mm (0.38 inch); jump second movement suitable for clock panels 2–6 mm (0.08–0.24 inch) thick. Hole center to tip hand size: hour hands measure approximately 70.5 mm (2.78 inch), 70 mm (2.76 inch), and 82 mm (3.2 inch); minute hands measure approximately 101 mm (3.98 inch), 92 mm (3.6 inch), and 117 mm (4.6 inch); includes 2 second hands approximately 100 mm (3.9 inch) long and 1 second hand cap approximately 7 mm (0.28 inch). Color: As shown Material: Plastic + Aluminum Package Contents: 1 x Swing movement (110x56x20mm) 1 x Gold pendulum 1 x Music box 3 x Hour hand 3 x Minute hand 2 x Second hand 1 x Second hand cap Only the above package content is included; other items are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Allowable measurement error is +/- 1–3 cm. Note: Due to lighting and screen setting differences, the item's color may vary slightly from the pictures. Slight dimensional differences may occur due to manual measurement.