This clock movement is easy to install, the replacement parts are simple and generous, and can be easily matched with the clock's frame. It is easy to use, easy to install, and helping you with the work of replacing the clock core. Features - Material: Plastic - Battery: AA battery(Not included) - Tips: The standard shaft can be used for dial thickness less than 4mm is commonly used for most quartz watches. The extension shaft is suitable for dial thickness less than 9mm - Good plastic material with stable performance and . - workmanship with fine movement of the clock provide precise time. - The design of the clock movements are simple and fashionable which fits for various styles. - The clock core's unique design and precise timekeeping can easily win people's love. - The clock movement is in workmanship, simple to operate and easy to use. Package list: 1 x clock mechanism