Red laser 650nm 6mm 5mw dot diode module copper head.Copper Head Diameter is 6mm.Comes in 5v. Comes in 2 pieces.Working life : more than 2000 hours Spot mode : dot facula, continuous output Laser wavelength : 650nm (Red) Light power : <5mW Supply Voltage : 4.5VDC Operating Current : <40mA Operating temperature : -36 ~ 65 Power lead length : 75mm Shell Material : Brass