Features:**** Super bright night running light: This night chest light is specially designed for runners. The 380 lumens LED light is powerful enough to illuminate your path even in the dark night, providing clear visibility in a 20-meter area, allowing You clearly see the obstacles on the road to avoid potential hazards and ensure your safety. The triangular flash on the back is always in strobe mode, allowing you to easily distinguish between dark or low-light areas, and can also be used to warn others.**** IPX 5 waterproof & USB charging: equipped with 2000 MAH battery, you never need to buy a battery, you can use the USB charging cable for fast charging, the chest light can adapt to various USB ports, such as AC adapter, mobile power, computer ,car. IPX 5 waterproof design is suitable for outdoor activities, night running, biking, walking, jogging, camping, hiking, fishing, mountaineering, you don't have to worry about rain.**** Lightweight and comfortable: The elastic elastic band can be adjusted, which can be adjusted according to your body shape, making it more comfortable and convenient to wear. Lightweight and flexible, the adjustable elastic band is suitable for everyone to wear, and it is stable to wear.**** Safe night driving lights with a wide range of uses: Different from traditional driving lights, it uses a reflective tape design. The reflective strip on the elastic band can emit obvious reflected light at night, providing you with all-round protection. This adjustable night running chest light is suitable for many purposes, including night running, walking, jogging, hiking, fishing, camping, climbing, car repairing, outdoor adventure, etc. It is a necessary safety equipment!