Nitesun S28 tactical flashlight uses one CREE XPL-V3 ( U4 is also available ) LED and can reach max 1000 lumens output. This flashlight is powered by one 18650 battery with max 10 hours run time. The tail-cap switch design, it’s easy to operate. IP68 standard waterproof features and 500 meters long beam distance, Nitesun S28 is one of your best choices for military, security,  hunting and outdoor lighting. Custom service for mode, package, and accessories