BARSKA Tactical Red Laser Sight System with Flashlight and Mount The 5Mw Red laser is visible to a range of 500 yard High intensity Flashlight features 35 lumens Remote pressure pad switches Output power: &lt;5Mw, Wavelength: 635-655nm Tube diameter: 19mm, adjustment type: Allen wrench, Battery type: CR-123A/LR-44 Lithium, 4 Required batteries (included) 1 year limited Warranty Class IIIA Laser Product, 5mW power output