Comfortable and lightweightWeighing only 69 grams, plus beans and two eggs, wearing a running light can reduce the pressure on your head. The adjustable length headband fits all head sizes. and comfortable. 500 lumens and 3 brightness levels - This night traffic light has 500 lumens, which can illuminate the road 20 m in front of you, avoid accidents and provide you with comprehensive protection. . [USB Rechargeable] - USB rechargeable LED running clip with built-in 2000 MAH battery, which can be charged by charger, power bank, computer, etc. After being fully charged for 3 hours, the parking lights can be used in high beam (4 hours)/low beam (8 hours)/flash (15 hours) modes. General Comfort The headband is comfortable and easy to adjust. The maximum beam angle of the headlight can reach 60 degrees to prevent dangerous injuries to friends, neighbors and family members. Wide application: This LED clip-on headlamp is rechargeable and perfect for camping , chance, hunting, fishing, climbing, cycling, construction, auto repair, dog walking and other indoor/outdoor activities. Note: Data is all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.