Upgraded Green Reflective Strip: Our latest LED chest light adopts green reflective strip, the reflection is clearly visible. Compared to traditional black straps, it improves your visibility and makes you safer in the dark. This jogging light is adjustable and equipped with a quick buckle, suitable for different body types and is very convenient to carry. hands-free USB RechargeableRunning light for jogging, the chest light is powered by 2200mAh USB rechargeable battery, you no longer need to search for spare batteries. The included USB port is compatible with most ports, allowing you to charge your security light on the go. Charge faster, power longer, and enjoy your activities with ease Two lighting modes This flashlight has two lighting modes: high light and low light. easy to use. You can press the button with one hand, ensuring that you can adjust the lighting mode in time without distraction, more safely. The red backlight makes you visible to pedestrians and passing vehicles, reducing risks IPX4 waterproof: This jogging chest light has an IPX4 waterproof function, which can prevent splashing water. no matter where, no need to worry about rain or snow. The strap is soft to the touch, very comfortable and will never fall off. Ideal for running, camping, hiking, hunting, fishing, mountaineering, construction work, auto repair, backpacking and other indoor and outdoor activities. Note: Data are 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.