CREE XM-L T6 HeadlampModel of LED: 3x CREE XM-L T6 LEDOutput bright can come to max 6000 lumens [lm]Internal wiring applies the high efficient booster circuit， working voltage is wide and can utilize the batteries in the largest extentWaterproofing designAdjustable base is provided for each head lamp， with back and forth inclinationOne button switch : 1x Cree XM-L T6/ 2x Cree XM-l T6/ 3x Cree XM-L T6/ FlashingModel of Battery required: 2x 18650 3.7vColor: BlackDimension : 83 x 37 x 58mmWeight : 219g Package:1X CREE XM-L T6 Headlamp