A great entertainment, decoration and safety warning lights for almost all bikes including Road Bikes, Mountain Bikes, , Hybrid Bikes, and even Children Bikes. Easy to color and mode with one button. to mode between steady, slow flashing, quick flashing; Double click to color between green, red, blue and colorful. Long press to power on/off. Features - - Material: PC. - Size: 9.5 x 9.5 x 1.7 cm. - A great entertainment, decoration and safety warning lights for almost all bikes including Road Bikes, Mountain Bikes, , Hybrid Bikes, and even Children Bikes. - Easy to color and mode with one button. to mode between steady, slow flashing, quick flashing; Double click to color between green, red, blue and colorful. Long press to power on/off. - 5 Waterproof - means you’re covered in all types of severe weather. With this bright LED wheel light, you wheel always remains visible at night, which makes your riding safer. - Rechargeable - powered by built-in Li-Battery, the wheel light could work continuously for 12 hours and only need about 3 hours to fully charged. Save you from changing batteries all the time. - Fast and Easy Installation - select appropriate sized hub pad (included) to stick on the inner ring of the light. Encircle the light around the center of the hub, then buckle up. Package list: 1 Hub Light