last for 3-8 hours when fully charged. The detachable, washable and adjustable headband, made of soft fabric material, fits both adults and children. Good flexibility makes the Headlight fixed well and does not feel uncomfortable. Can survive heavy rain and all the impact in common outdoor activities and working conditions.Super bright & Long Duration This LED headlamp use class-leading LED chips, which has the maximum brightness of 800 lumens, bulit-in 800mAh rechargeable lithium battery Long press & Motion sensor GARRAS headlamp has 8 lighting modes to meet your different needs. Long press for 3 seconds to turn off, no longer need to switch all modes. Support motion sensor function, you can easily turn on/off the lights by waving your hand. Waterproof & ShatterproofReinforced housing with a waterproof rating of IPX4. Ultra-lightweight and adjustableThe hands-free headlight weighs only 1.87 OZ (53g), is comfortable and lightweight.