Max Output 3,100 LumensMax Beam Distance 305 MetersMax Beam Intensity 23500 cdMax Runtime 55 h 0 m / 2.29 dLED 2 x NiteLab UHi 20Reflector OPBattery Built-in 1,700mAh Li-ion BatteryBeam color White LightLength 135.3 mm / 5.33 inHead Size 31.4 mm / 1.24 inWeight 122 g / 4.30 oz