SAVING MODE - Press the switch, indicator light blue light that enters the light sense mode，bicycle light turns on automatically when there is insufficient ambient light，bicycle light turns off automatically when the ambient light is sufficient.

LONG LASTING USB BIKE LIGHT - No hassle of replacing batteries! Our LED bike light is USB rechargeable. Fully charge it at your computer or a wall charger (USB charging cable included) for 2 hours, the bike front light can work up to 4 hours continuously.

WATER RESISTANT - No matter what the weather condition or the environment in which you wish to ride your bicycle, this LED bicycle headlight set will never let you down. With water-resistant plastic, you can enjoy clear visibility during rain, dark nights, and on any occasion.

High Quality - Super Bright flashing lights alert drivers of your presence. High quality mounting attachments keep the lights on your bike, even on rough roads. This Bike Light Set also illuminate the path at close range, showing you bumps and potential hazards in the road. Illuminates the path at a long-range in complete darkness.