Using plastic materials, this clock mechanism clock kit is practical and not easy to deform, which brings you of convenience. Clock mechanism with pendulum is simple , but practical to use, which will give you a good use experience, very suitable for DIY or clock. Features -Color:Multi -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). -Made from plastic materials, the mute clock mechanism is very sturdy and durable, can be used for long time. -This clock movement can be applied for most clocks, easy for repairing, replacing or making your own clocks. -Perfect for craft clock, rimless wall clock, wall clock, can be match with any different color, pattern and shape of clock panel of proper size. -Good workmanship, the clock movement will not easy to deform or break, you can use with peace of mind. -This DIY clock movement is with simple structure, easy to install, with equipped necessary parts, satisfy your demands better. Package list: 2 x Set of Clock Movements