[Lightweight & Portable] The running headlamp can be carried anywhere,only total weighs 51g (0.95oz w/o headband, 1.8oz w/ headband). The head light can be easily put in the pocket, easy to use and perfect for adults and kids. IPX4 waterproof rating can be used out in the rain and can meet needs in various lighting environment, do not suggest for diving. [Adjustable & Comfortable] The hand-free headlamp flashlight can be adjusted according to the different head circumference for comfort; This headband light can be firmly worn on your head and wont shake; It can also be placed as a bike headlight / taillight. The head lights LED can be adjusted to 90 degrees, allowing you to focus the light where you need it and it can be adjusted according to a full range of lighting needs. [7 Lighting Modes with 2 Colors] 3 White Light modes (Strong light/Weak light/Explosive flash); 4 Red Light modes (Running lamp fast/Running lamp slow/Flash and Flash slow)- Long press 3 seconds to switch the light color, single press to switch the lighting mode. NOTE: Don't look directly at the light [USB C Rechargeable] The rechargeable headlamp has a built-in 400mAh rechargeable battery, the headlamps only takes 3 hours to be fully recharge via USB C port (USB C cable included); The indicator light will turn red when charging, and turn blue when fully charged. The running time of the low brightness mode can be up to more than 5 hours, and 3 hours of the high brightness mode. [Multifunctional Usages] This headlights for head is suitable for indoor and outdoor activities; It can be use for night reading, night repair, running, jogging, dog walking, climbing, night fishing, hiking, camping and hunting, etc. Red light mode is as tail light especially ideal for night cycling.