Features:Easy to install, convenient to use.1x AA Battery is needed.(Not included)Replacement for old, damaged clock movement.Made of material, durable, has long service for time.Overall shaft length: 14.5mm, thread height 7mm, suitable for passing through 4mm thick panels. Specifications:Material: ABSSize: Approx. 56x56.7x16 mm/2.20x2.23x0.63 inSolar movement parameters:Use voltage: 1.3v to 1.7vTravel for time accuracy: 25Sec/Month (1.5V for DC. 25)Current consumption: Less than 150A (1.5V for DC.)Operating temperature: -10to60Battery Life (Specs): Approx. One Year (UM-3)Weight: Approx. 25g/PCSSecond hand output torque: 0.6gf-cm (1.5V)Minute hand output torque: 30gf-cm (1.5V)Pointer specification requirements:Second hand length/weight: 130mm, 2gMinute hand length/weight: 160mm, 6gSecond hand unbalanced moment: 0.15gf-cmMinute 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.