<b>Laser class:Class IIIA</b><br><br><b>Specifications:</b><br>Power: <5mW <br>Voltage: DC 4.5V<br>Batteries: LR41<br>Wavelength: 650nM <br>Effective distance: 300 meter at night <br>Item Weight: 1.1 Ounces<br>Size: 1.1" x 1", mini style<br><br><b>Package includes:</b><br>1x Red Dot Laser Sight <br>1x Wrench Key <br>3x LR41 Batteries