Beileshi Tactical Red Laser Beam Dot Sight Scope for Pistol/handgun Picatinny Rail Mount Hunting with Button Cells Universal clamp-on mounting dech to fit most tactical firearms Clear and extra bright laser beam Precise and wide range windage and elevation adjustments for all firearms Laser Class: Class IIIA. Power:5mW, 50-100 meters laser range. Widely used for laser alignment/aiming/positioning/hunting/spotting/search/rescue/hiking Accessories: allen wrench and LR44 button cells (gift)