The Streamlight 66210 Megastream USB Rechargeable Flashlight delivers up to 1,800 lumens with a 322 meter beam for powerful illumination in professional environments. It features high, medium and low modes with runtimes of 2 hours, 3.5 hours and 13 hours. The included 3,500 mAh SL B34 lithium ion battery can be charged inside or outside the light. A metal sleeve protects the USB C charging port and slides back for access, while the push button tail switch supports momentary or constant operation. Built from anodized machined aluminum with an unbreakable polycarbonate lens, the light is IPX7 waterproof and 2 meter impact resistant. Compact at 5.3 inches and 5.4 ounces, it includes a pocket clip, USB C cord and holster.