Specification:Wavelength: 405nm Output Power: 20mw Working Voltage: three - 5V Working Current :<160mA Working Temperature :15℃~35℃ Laser Shape: Dot/Line/Cross Focusable: Yes Material: Metal crimson cord for postive +, black wire for destructive - Dimensions: 12x35mm (or infrequently 12x45mm in step with manufacturing unit batch)Details:1 is a 405nm 20mw focusable laser module : Dot 、line and pass 3 spot modes are available,which is shown within the main photo. 2 you would like prolong the operating time of this module, please upload heatsink to this module. 3 hold the lens clean:1pc Adjustable 405nm 20mw Laser Diode Module