Our patented laser sight technology takes aim like never before! The all-new RefractR BLS is the most versatile and dependable model ever built. Hardware is included for both the sight and stabilizer mounting options. The high-power laser eliminates refraction to deliver superior accuracy. Sight & stabilizer mounts included Waterproof 5mW green laser withpressure switch activation Aluminum construction Stainless steel hardware CR123A 3V battery included Patented technology (#8,464,700)