The Streamlight TLR-1s is a lightweight, compact weapon light featuring high-output C4 LED technology and a specialized strobe function. The strobe is easily activated via two or more momentary paddle hits, providing a tactical advantage when enabled. Constructed from durable black anodized aluminum, the 4.18-ounce unit is waterproof and features a tethered battery door to prevent loss during field swaps. Its versatile rail clamp system allows for rapid, secure attachment to various firearm rails including Glock-style, Picatinny, Beretta 90two, and S&W TSW. Powered by two included CR123A batteries, it delivers 300 lumens of shock-proof illumination for over 2.5 hours of continuous use.