In any mode, if you hold the power button for 3 seconds, you can easily adjust the brightness of this led rechargeable headlamp to meet your different lighting needs. 【 SUPER BRIGHT & RECHARGEABLE 】- The headlamp flashlight has a maximum brightness of 300 lumens, and easily light up a whole tent, room, and road. The rechargeable headlight can last for 4-6 hours after a full charge and allow you to charge and turn on the light simultaneously. 【 LIGHTWEIGHT & WATERPROOF 】 - Weighing just 2.5oz and IPX4 waterproof rate, the headlamp is ideal for any individual who needs a led headlamp whether it is raining or snowing, indoors or outdoors. It is also a great rechargeable headlight for running, hiking, camping, climbing, fishing, hunting, etc. 【 FLEXIBLE ANGLE & STRAP 】 - The headlamp can be adjusted downward by 90 ° and tightly fixed to avoid shaking and sliding when running. The led head fl...