The Assassin features a builtin laser beam that bends in water instead of aiming low, you put the dot directly on the fish for a perfect shot. Laser automatically activates at full draw with a simple bowmounted magnet and comes sighted in from the factory for line of sight out to 20 yards. Red laser works best in lowlight conditions and may be difficult to see in bright sunlight or under extremely bright halogen lights. Hollow Point Tip acts like a core drill, removing a .25caliber size hole during penetration. Point is made of stainless steel with quickrelease barbs for easy fish removal. Includes one disposable battery for up to 100 shots. Fits standard bowfishing arrows.