1.good quartz movement work well, Simple design, easy to use,Energy efficient, Accurate timing. 2.Great for repairing, replacing or making a clock. 3.This kit is good size replacement both in terms of the shaft and the size of the hands. It can be a replacement for your broken clock. 4.Wide application: You are enable to use it to repair, replace or make a home clock; Applicable to -, three-dimensional embroidery, craft home clock, frame-less draw clock, clockwork, etc. DIY clock kit, , and specially suitable for DIY quartz wall clock replacement movement parts, etc. 5.Quality material: the movement shell is made of Plastic material which is sturdy and for a long time, and the clock hands are made of quality aluminum, which is light in weight and - to provide you with nice use and decorative effect Type: DIY Pendulum Clock Movements Size:shaft length 23 mm Rated voltage: 1.5V Battery life (specification): . 12 Months (UM-3) Use Battery: .5V AA Carbon battery (not included) Instruction: 1. Attach the clockwork to the product to be installed. 2, is installed in accordance with the standard 12 points,when you install it, please keep the hour hand and minute hand parallel 3. Pull out the positioning pin from behind the clockwork and insert the battery.(Do not insert the battery and then pull out the locking pin.) Colour:black Material:Plastic + Aluminum Package Contents: 3 x Pendulum clock movements 18 x clock hands 3 set x Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.