4 LIGHTING MODESWith 4 different lighting modes for your choice. Bright Light, Low Light, Flashing Light and Emergency Flash to ensure visibility in all conditions and can keep your riding safe. HIGH QUALITY WATERPROOF Powerful led bike light is made of aluminum alloy High quality aluminum, silicone elastic mounting strap is advanced and stable, these powerful security lights are durable and IPX4 waterproof, suitable for variety of adverse weather conditions including rain, snow, fog and the mist. USB Rechargeable BatteryUSB rechargeable spark light, built-in 650mAh lithium battery for each light. they can be charged with any device with USB ports (PC / portable charger / wall charger / etc.). No need to replace the battery. Simple installationThere are 2 silicone belts in the package, the belt is elastic enough, suitable for all types of bicycles, and the fixing is more stable. The straps can be easily removed from the liner and then fixed without tools. Safe ridingfront light can be unhooked quickly by the bicycle, and served as an emergency flashlight for your stroller is. And warns other vehicles of your presence. for cycling, camping can even be an emergency flashlight for outdoor activities.