6 LIGHTING MODESbicycle light has a brightness of 50 lumens and a range of 200-500 meters. LED bike light set have more lighting modes let you better adapt to the surrounding environment, front white lamp and tail red lamp support 6 lighting modes: Full brightness- Half brightness- Low brightness- Slow flash- Medium flash- Fast flash. You can change all light modes quickly and easily by switch button.FAST USB RECHARGEABLE Each bicycle headlight has built-in 260mAh rechargeable lithium battery, it only takes 1 hour for full charge, the indicator light is green when fully charged. Alsooperating time up to 8-12 hours maximum in low brightness mode. You can use other USB devices for fast charging. The rechargeable LED bike lights doesn't need to change the battery.WATERPROOF AND LIGHTWEIGHT The USB charging port of the bicycle lights is made of IPX5 waterproof material, the USB charging port is also made of silica gel, which has strong anti-leakage ability, this can protect the inside of the bike light well. Besides, it weighs only 20g for each and measures only 33 x 25mm, the product specifications are small and easy to place or carry, you can install and remove anytime, anywhere.EASY INSTALLATION AND SAFE There are 2 silicone mounting straps in the package, you can loosen and fix easily without any tools. This powerful little bike light can fit all parts of a bike and all kinds of bicycles like road bikes, mountain bikes, hybrid bikes, and it is perfect for kids, beginners and all riders. It is also suitable to be placed on helmets, backpacks, tents, skateboards, and dogs as lighting and warning functions. Protect yourself and your pets in the dark