Color Black + Silver Quantity 1 Piece Material Aluminum alloy Laser Power 5 mW Wave Length 650 nm Laser Color Red Output Mode Red laser dot Excitation Mode Optical Pump Wave Band Range 635-650nm Working mode Continuous laser Working Voltage 3.7 V Working Current 50 mA Battery Built-in 300mAh li-ion rechargeable battery Other Features With mini USB charging port; Built-in 300mAh rechargeable battery; Widely used in various laser pointing teaching demonstration with a laser light source laser positioning teaching command architecture exhibition control instructions etc. Packing List 1 x Laser pen 1 x Mini USB cable(55cm)