The Lumen 800 Ultra Waist Light provides the ultimate UltrAspire 3D Lighting experience, it's like turning on the sun. The Lumen 800 Ultra features an 800, 500 Steady Beam, 200 Steady Beam, and blinking light setting. This patent pending light is powered off of an aircraft aluminum battery pack that holds two of the UltrAspire 18650 batteries for double the battery life and can also be powered off of any USB power bank. Included is an extension cord to take the battery pack off of your waist and carry it in your pack. Easily power on/off or adjust the brightness of your Lumen by pressing the lens or the rim of the light during those fatigued adventures. This light features the Race Fit which is a fatigue-free buckle and adjustment system. The Lumen 800 Ultra includes all necessary adapting cords, a battery charger, and 2 batteries.Waist Lights details:Super wide angle lensDetachable power cordRemovable battery packPrecision adjustment strapPerformance buckleLow, medium, high, and blinking modesLimited stretch elasticUSB power-pack compatible5.5-15 hour burn time / Blinking: 20 hour burn timeIPX6 water proof rating