Mounting directly to handguns with Glock®-style rails, as well as all MIL-STD-1913 Picatinny rails, the Streamlight® TLR-1®S 69210 Gun Light an impressive 300-lumen max output and features a deep-dish parabolic reflector to deliver a concentrated beam for quick target identification. The durable, precision-machined, anodized aircraft aluminum housing easily shrugs off punishing recoil, while the rail clamp system quickly and securely attaches/detaches to accessory rails, without requiring any special tools. Ambidextrous momentary and constant on/off controls readily accommodate right- and left-handed shooters, and a user-activated “double-tap” strobe function allows you to stun and disorient would-be assailants for reliable, non-lethal defense. Operating on two CR123A lithium batteries (included), the Streamlight TLR-1S boasts a 2.5-hour battery life. Compatible with Streamlight remote pressure switch accessories (not included). IPX7 waterproof.