1.Good quartz movement will work , Simple design, easy to use,Energy efficient, Accurate timing. 2.Great for repairing, replacing or making a clock. 3.It can match to diverse colors, patterns, shapes clock panel, it will not stand out, good movement will work . 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, -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 ABS material which is sturdy and durable for a long time,which is light in weight and corrosion-resistant to you with use and decorative effect Type: DIY Clock Movements Size:shaft length 16.5mm,thread length 8 mm Function: Swing and High quality. Rated voltage: 1.5V 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, keep the hour hand and 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 & Metal colour:Black Package Contents: 2 x DIY Clock Movement Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.