This DIY clock movement set is made of sturdy material, which can withstand lasting use. Features the plastic material, which has high durability, not easy to deform. Fine workmanship, ensures practicality, durable and useful for DIY clock. Features -Color:Black -Material:Plastic -Size:5.50X5.50X1.50cm/2.16X2.16X0.59in -Frequent:32.768KHz -Working Voltage:1.25-1.7v -Note:Suitable for diameter of 10.00cm/3.94in-12.00cm/4.72in; Battery is not included. (1 x 1.5V-AA battery). - Our practical clock movement is suitable for most clocks, don't have to worry about non-compatibility. - The design of the clock core is simple and generous, and it can be easily matched with various clocks frame. - The clock core's design and accurate timekeeping function can easily win people's love. - This product is made of plastic materials, wear resistant and useful, durable and reliable. - DIY clock movement kit is exquisitely crafted, not easy to deform, sturdy and durable. Package list: 1 x Set of Clock Movements