1. [90° adjustable beam angle] It features a unique design with an adjustable beam angle of 30° upward and 30° downward. It can illuminate the ground and slopes while reducing the light reflected into your eyes. The rotatable light allows you to see far enough ahead to avoid road hazards. 2. [USB charging and waterproof] This running light comes with a USB charging cable. It takes approximately 5 hours to fully charge via the included USB cable. It has an IPX - 4 level of waterproof function, so you don't have to worry about visibility issues on a dark rainy day. 3. [Ultra - bright running chest light] This 90° tiltable running light is brighter than many lights on the market, with a powerful 500 - lumen brightness behind an L2 LED. The battery life in low - light mode can reach around 10 hours, while in high - light mode, it is 4 - 6 hours. 4. Three high - brightness lighting modes: Each mode is designed for different night environments. This rechargeable running light is suitable for activities such as running, hiking, camping, and walking the dog. 5. [Reflective and adjustable shoulder strap] This running light, used by many morning runners, is equipped with an elastic fastening shoulder strap with an adjustable length, providing a comfortable wearing experience for most people of different body types. In addition to the white light in the front and the red warning light in the back, the reflective tape adds extra protection. 6. Material: PC + nylon 7. Color: Black 8. Package contents: - 1 running light - 1 USB cable Only the above package contents are included, and no other products are included. 9. Precautions: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the actual object. The allowable measurement error is ±1 - 3 cm.