Good clock replacement: good quartz movement will work well. Simple design, easy to use. Energy efficient. Accurate timing. Great for repairing, replacing or making a clock. 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. Perfect DIY clock kit, , and specially suitable for DIY quartz wall clock replacement movement parts, etc. Type: Clock Movements Size: the shaft length is approx. 20 mm/ 08 inches, and the thread length is approx. 146 mm/ 057 inches; Jump second movement is suitable for 9 - 13 mm/ 035 - 051 inches thickness of clock panel Rated voltage: 15V Battery life (specification): Approx. 12 Months (UM-3) Use Battery: One 15V 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.) Material:Plastic + Aluminum colour:Black + Golden Package contents: 2 x Quartz clock movements 14 x clock hands 2 set x Accessories Only the above package content, other products are not included. Note: Light 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.