Streamlight TLR 4 Tactical Light with Red Laser for H K USP Compact Weapons. Product Description The Streamlight TLR-4 is an ultra-lightweight and compact weapon-mounted tactical light with an integrated class 3R red laser. Featuring 170 lumens and 3300 candelas of brightness, the TLR-4 provides 1.5 hours of continuous run time when in dual mode with the high-power visible laser. Three user-selected modes to choose from: Light only, light and laser, and laser only. The TLR-4 has a Rail clamp designed to attach/detach from the side of the weapon rapidly. One-handed snap-on and tightened interface keep hands away from muzzle when attaching/detaching. Please refer to the Streamlight TLR fit guide for the best compatibility. Model 69240 includes rail keys for a variety of weapons, model 69241 is for HandK USP Compact, and model 69242 is for HandK USP Full-Size. The light provides 1.5 hours of continuous runtime when in dual mode with the high power visible laser. Rail clamp designed to rapidly attach/detach from side of weapon. Case body is made from impact resistant Engineering polymer. Face cap is made using 6000 series machined aircraft aluminum with black anodized finish. Borofloat high temperature glass lens. Light source uses C4 LED technology, impervious to shock with a 50,000 hour lifetime. 5,000 c and ela peak beam intensity and 110 lumens measured system output. Textured parabolic reflector produces a concentrated beam with optimum peripheral illumination. 640-660nm red laser provides long-range targeting. Optimized electronics provide regulated intensity. Ambidextrous momentary/steady On-Off switch. Three position Mode Selector switch for Laser only, LED illumination only or both Laser and LED. Run time is 1.5 hours regulated run time to the 10% output level for LED only or LED and Laser. Run time is 11 hours regulated output for Laser only. Securely fits a broad range of weapons using key kit provided. Designed for sub-compact and compact weapons. Features white LED with 170 lumens; 3300 candela; 115 meter distance; run time 1.5 hrs. Featuring light only; light & laser; and laser modes; the output of the red laser is. Ambidextrous momentary/steady on-off switch. Durable aluminum construction; IPX4 water resistant. Ultra lightweight and compact. One h and ed snap-on and tighten interface.