TLR-2s Weapon Light - LASER & STROBE with a rail and installs in just a few seconds. Details: This updated model features C4 LED technology with 300 lumens peak output and adds a strobe feature that is ideal for disorienting an assailant. The light will run for up to 2-1/2 hours on 2 CR123A batteries (included). This model also features a high-power laser which will run for up to 45 hours. The TLR-2S is covered by Streamlight's No Excuses lifetime warranty.