Crimson Trace CMR-301 Rail Master Pro Green laser. 1000 peak lumen LED. Picatinny rail and M-LOK mounts. Locking remote switch input. Can be operated as a stand alone unit or attach the 6 remote switch for more customizable activation and selection. Dimensions: 3.4″ L x 2.9″ W x 1.2 D with a weight of 6.4 ounces. Brightness: Features 1000 lumen LED light and a 5mW peak, 620-670nm, Class 3R visible green laser that is in conformance with and complies with 21 CFR 1040.10 with a max power output of 5mW for a Class 3R Green Laser – brightest beam allowed by law. Runtime: 1 hour of battery life that runs on (1) 18350+USB C rechargeable battery (included) with Laser, Light, and Laser + Light modes. Ease of use: Laser and light can be activated via push button or remote Instant Activation pressure pad which also attaches to accessory rail – Adjustable flashlight peaks at 1000 lumens. The Rail Master Pro can be operated as a standalone unit or attach the 6 remote switch for customizable activation and selection – Optional 6 remote switch included.