Features: This clock Part is perfect for creating clock with precise timing and low power consumption. Plastic material, these clock movement operate quietly and suit clock of various thicknesses and diameters. Clock enthusiasts will appreciate the ease of use and of this clock mechanism set. Suitable for indoor like offices and drawing room, these clock mechanisms allow you to DIY. Follow the installation instructions carefully to ensure smooth operation of your clock. Specifications: Material: Plastic Color: Black/Golden Type: 4 Option Require: 1pc AABattery(not included) Package Includes: 1Set Clock Movement Replacement Part note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. 3.Battery is not included.