Specifications: Material: Plastic Light Dimensions: 58 x; 31mm Power: 800mAh Li-Polymer battery Charging: USB charging Lighting time: 5-13 hours Package: Headlight * 1 Headlight belt * 1 Charging cable * 1 Convenient Lightweight even for children: dimensions of 58 x 31mm. Overheating after hours of use. Do not feel any pressure on the head. The breathable and adjustable elastic headband fits both adults and children perfectly; it holds the lamp comfortably and steadily on the head even when running. 5 Adjustment Easier to use: Equipped with 5 lighting modes - it can remember the last lighting mode used, that is, you dont have to click through all the modes of the lamp again If the light is on for longer than 4 seconds, you can use the smart timer function to switch the light off with one push of a button. USB rechargeable: Built-in high quality 800mAh Li-polymer battery. Run time up to 12 hours with low brightness and 5 hours with high brightness. The charging time is only 2 hours (USB cable included). The service life of the LED lights is more than 100,000 hours, no replacement is to be feared. Waterproof Weatherproof You can point the running light exactly at the desired position. Suitable for indoors and outdoors, regardless of whether it is raining or snowing. You can use it for night reading, dog walks, night fishing, hunting, jogging, biking, camping, hiking, cave exploration, home improvement, night repair, or even in an emergency at home or at work