The sleek 150-lumen Black Diamond Ember Power Light masters hand-held lighting while adding charging capabilities. With an integrated USB port, keeping hand-held electronics alive is possible even miles from the trail head. A swipe-activated TriplePower LED and a rechargeable lithium polymer battery with power meter and lock mode for increased shelf life eliminates your lighting worries. Power meter shows remaining battery life. Max burn time : 50 hrs. Rechargeable, sealed lithium polymer battery. Weight with batteries 3.4 oz. Imported.