The night running light is for you to stay visible and safe at dark night. Suitable for people who like to run, jog, fish, and climb in the evening. The good brightness will offer you high visibility in the dark, high waterproof degree for operating normally even in the rainy days. This running light will give you more safety for night sports. Features -Color:Assorted Color -Material:ABS, nylon -Size (back light):10.50X5.30X2.70cm/ 4.13X2.08X1.06in -Size (front light):7.00X6.00X3.00cm/ 2.75X2.36X1.18in - running light is designed to better ensure your safety during the night outdoor sports and exercises. -The running light will not occupy your hands, it can be easily worn on chest, giving your hands enough freedom to do other things. -The high-brightness light and reflective strap design will give you much safety by making you visible in the dark night. -The strap has adjustable buckle on it, you can adjust the size according to your body figure, comfortable and lightweight for wearing, will not be too tight. -USB port rechargeable design, can be powered by computer, power bank, adapter, laptop and so on, long battery life for working time. Specification -Built-in battery: 18650, 2200 mAh battery. -Charge method: Micro USB. -Light mode: three mode: floodlight, concentrated strong light and concentrated weak light. -Waterproof grade: IPX4. -Lumen: 400-500 lumen. -Range: 50-100 . -Work time: Strong light discharge for about 3 hours. Package list: 2 1 x Strap 1 x Charge Cable