Improved 120 degree adjustable bar--This easy-to-use traffic light can be adjusted up to 120 degrees, the widest adjustment angle on the market. This traffic light fully meets the needs of riders on uphill, downhill and straight roads, protecting your safety and preventing accidental tripping.500 lumens and 3 brightness levels-- This night traffic light has 500 lumens and can illuminate the road 20 meters ahead. The red screen on the back can give warning of the vehicle's arrival, help the driver to identify the driver, avoid accidents and fully protect you. 3 lighting modes: high light, low light and strobe. You can change the light mode according to the road conditions.USB charging--The sports running light is charged by USB, with a built-in 2000MAH battery, which can be charged by chargers, power banks, computers, etc. After 3 hours fully charged, the position lights can be used in long distance (4 hours) / low light (8 hours) / flash (15 hours) mode.Not just a group as a gift--Fashion when exercising. We provide an additional black shoulder strap. The two suspenders can be matched with different sportswear. Thanks to the highly elastic straps, you can adjust the length and firmness to your body to keep the light in the right position. The rechargeable LED running light is light, very light and does not interfere with your training.Ideal gift--This running armband is 6 waterproof, so you don't have to worry about rain or sweat. Ideal for outdoor sports. A great gift for dads, husbands and friends who love jogging, fishing, camping, hiking and adventure.