Features & Benefits: Tactical flashlight with multi-fuel options 3,500 lumens; runs 1.25 hours using 18650 USB batteries (high beam) Multi-fuel uses rechargeable 18650 USB batteries or CR123A lithium batteries, so you\’ll always have a beam when you need it TEN-TAP programming allows selection of three different operating programs Durable, anodized aluminum construction The 3,500 lumen ProTac HL 5-X is available two ways: The ProTac HL 5-X USB is a complete rechargeable system that includes two of our new 18650 USB batteries with an integrated USB charge port. The ProTac HL 5-X includes two CR123A lithium batteries. Both feature MULTI-FUEL innovation that allows them to accept Streamlights 18650 USB battery or CR123A lithium batteries, ensuring youll always have a beam when you need it. Engineered optic produces a concentrated beam with optimum peripheral illumination. IPX7 waterproof to 1 meter for 30 minutes; 1 meter impact resistance tested. Durable, anodized aluminum construction.