Product Parameters: 100% brand new and high quality Material: Electronic component Color: See pictures Operating Voltage: 5V Output Wavelength: 650 nm With fixed bolt hole for easy installation Size: 2.7*1.6*0.6cm/1.06″*0.63″*0.24″ This 5 V laser head very easy to use, you can use Arduino control, make controllable laser pointer, theft detection,…