Streamlight TLR-7X, 500 Lumens, 1.5 Hour Runtime, Comes with High and Low Switch and (1) CR123A Lithium Battery, Black 69424 The TLR-7 series is going rechargeable! The TLR-7 X multi-fuel rail-mounted light accepts either Streamlight's SL-B9 USB rechargeable protected lithium-ion battery pack or a CR123A lithium battery. Interchangeable rear paddle switches accommodate your shooting style.