1.good quartz movement will work , Simple design, easy to ,Energy efficient, 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 it to repair, replace or make a home clock; Applicable to -, three-dimensional embroidery, craft home clock, frame-less draw clock, clockwork, etc. Perfect 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 durable for a long time, and the clock hands are made of quality aluminum, which is light in weight and corrosion-resistant to you with and decorative effect Type: DIY Clock Movements Size:shaft length 23 mm Rated voltage: 1.5V Battery life (specification): Approx. 12 Months (UM-3) 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: 1 * clock movements 6 * clock hands 1 set * Accessories Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.