BESTSUN Super Bright 2000 Lumens Cree XM-L T6 U2 LED Waterproof 3 Modes Zoomable Rotating Headlamp LED Headlight 18650 Rechargeable Battery Head LED Torch Flashlight with Charger and Batteries 3 LIGHT SWITCH MODES:High light,low light and strobe light.Zoomable headlamp brightness can be up to max 1800 lumens,Lifespan reach up to 100,000 hours,18650 3.7V rechargeable li-ion batteries included. HANDS-FREE AND LIGHTWEIGHT:Whenever you wear the headlight,your hands are free ,very convenient.It is good for camping riding fishing hunting reading. ADJUSTABLE&ZOOMABLE:Lamp swivels can be 90 degrees adjusted,and adjustable Strap is provided to make your head get the best comfortable condition.Zoomable headlight function can make you see a larger range brightness . WATERPROOF:Whenever you wear the headlamp outdoors, you wouldnt need to worry if it rains unexpectedly . Please remove the plastic wrap off the batteries at first time use,otherwise it cant recharge. Avoid using your headlamp while charging.