Features: Easy to install, convenient to use. 1x AA Battery is needed.(Not included) Replacement for old, damaged clock movement. Made of high quality material, durable, has long service for time. Overall shaft length: 14.5mm, thread height 7mm, suitable for passing through 4mm thick panels. Specifications: Material: ABS Size: Approx. 56x56.7x16 mm/2.20x2.23x0.63 in Solar movement parameters: Use voltage: 1.3v to 1.7v Travel for time accuracy: 25Sec/Month (1.5V for DC. 25) Current consumption: Less than 150A (1.5V for DC.) Operating temperature: -10to60 Battery Life (Specs): Approx. One Year (UM-3) Weight: Approx. 25g/PCS Second hand output torque: 0.6gf-cm (1.5V) Minute hand output torque: 30gf-cm (1.5V) Pointer specification requirements: Second hand length/weight: 130mm, 2g Minute hand length/weight: 160mm, 6g Second hand unbalanced moment: 0.15gf-cm Minute hand unbalanced moment: 6gf-cm Note: 1x AA Battery is needed.(Not included) Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Clock Movement