Good clock replacement: good quartz movement will work . Simple design, easy to . Energy efficient. timing. Great for repairing, replacing or making a clock. 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. Type: Clock Movements Size: the shaft length is approx. 20 mm/ 0.8 inches, and the thread length is approx. 14.6 mm/ 0.57 inches; Jump second movement is suitable for 9 - 13 mm/ 0.35 - 0.51 inches thickness of clock panel 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.) 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 the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.