10000mAh Rechargeable Battery: Built-in 10000mAh large capacity rechargeable lithium battery, our bike lights provides 5 to 10.5 hours running time, which can meet your long time riding lighting needs. The bicycle light also has digital power display, which helps you accurately grasp the remaining power, so you'll never be left in the dark unexpectedly.17 LED Wider Lighting Range: The W617 bike lights features 17 high performance LED beads and provides a unique horizontal design that increases the lighting range by 100%! Using the combination of low beam and high beam, the irradiation distance is farther and the irradiation range is wider to meet the needs of different scenarios.Easy Installation: Come with two aluminum alloy brackets and a Allen wrench, it is easy to connect bike and light. This bike lights is compact, portable and is suitable for night riding, hiking, camping, walking at night, or any outdoor activity.Type-C Quick Charging: This bike light is built-in fast charging chip, charging 3 times faster and extending the service life. In addition to the normal USB input rechargeable function, this bicycle light also can serve as a power bank, allowing you to charge your phone or other devices on the go using the USB output.Multiple Modes: The bike lights has 4 lighting modes- 8 led floodlights, 9 led spotlights, 17 led bright lights, 17 led flashing lights, which can adapt to different scenes. It is a good bike lights for night riding. You can also use it for night running, camping, fishing, night work and activities, etc.