Features two lighting modes: Constant on and THRO (Temporarily Heightened Regulated Output) mode for maximum brightness - 300 lumens; 69m beam; runs 3 hours - THRO: 1,000 lumens; 110m beam; 35 second burstSpecifications and Features:Batteries Included: YesBattery Type: Rechargeable Lithium PolymerBattery: 18650Beam Distance: 360 FeetBulb Color: WhiteBulb Type: LEDLight Output High: 1000 LumensLight Output Low: 300 LumensMaterial: AluminumRechargeable: YesRun Time High: 35 Seconds