Good clock replacement:Quiet silent mode. Easy and simple design. Great for repairing, replacing or making a clock. Simple style clock movement:good quartz movement work well. Simple design, easy to use. 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, clock accessories, clock parts accessories.Energy efficient. Accurate timing. Type:Clock Movements Power: 1.5V AA battery (not included) Movement: 55x55x16mm Total shaft length: 16mm/0.6inch Thread length: 8mm/0.32inch Instruction: 1. Attach the clockwork to the product to be installed. 2, is installed in accordance with the standard 12 points 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&Silver Material:Plastic + Aluminum Package Contents: 10 x Quartz clock movement