Designed to enhance visibility and targeting capability in home defense and tactical situations, the ultra lightweight and compact TLR-7X sub Weapon-Mounted Tactical Light features powerful LED technology for high lumen operation and provides 1.5 hours of continuous runtime from a single lithium battery. 500 Lumen output delivers a powerful beam with extensive range, good peripheral coverage and selectable strobe mode.Features :Multi-fuel: Uses (1) Streamlight SL-B9 protected Li-Ion USB-C rechargeable battery pack or (1) CR123A lithium battery500 lumens5,000 candela141m beamRuns 1.5 hours (CR123A), runs 1 hour (SL-B9)Ambidextrous rear paddle switches with HIGH and LOW optionsSafe-off feature prevents accidental activation, saves batteries