Nitesun S18 high power led flashlight uses one CREE XPL-V3 LED and can reach max 1000 lumens output. This flashlight is powered by two 18650 batteries with max 50 hours run time.The tail-cap switch design, it’s easy to operate. IP68 standard waterproof features and 500 meters long beam distance, Nitesun S18 is one of your best choice for military, security and outdoor lighting. Custom service for mode, package and accessories are available.