Producing a unltra bright beam of light by CREE LEDExtensive Lifetime of LED (10，000 hours)Adjustable headband with a soften pad for foreheadMany usage of an LED headlamp such as camping， backpacking， hunting， fishing， Emergencies and home repairingIt is the top-level equipment for biking player Output 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 extent Waterproofing design Adjustable base is provided for each head lamp， with back and forth inclination One button switch : 1x Cree XM-L L2/ 2x Cree XM-l L2 3x Cree XM-L L2/ Strobe Model of Battery required: 2x 18650 3.7v (without) Color: Black Dimension : 85 x 38 x 56mm Weight : 316gPackage Included:100% Brand New1 x High Power LED Headlight 6000lm Boruit RJ-50001 x usb cablewithout (battery and charger)