1.Premium Material bike tail light are made of environmental protection Silicone material makes them crush-proof, waterproof . 2.Creative Designcycling tail light have special shape for Heart, fashionable and creative ,Not only can be used for bike light but also for room ,party and event decorations 3.Easy to use Hang this bike hang it anywhere you want t, such as the handlebar, the seat post or anywhere on the frame, even your backpack, just need to press the button of the light when you use it. 4. Three Modes3 MODES FOR FLASHING - Constant light(6-8 hours), slow flashing(12 hours) or fast flashing(10-12 hours). Push the power button to change mode and turn on or off. 5. After-ServiceThere are offer four color to choice that is Blue , Red , Green and Colorful . (Warm Tips : The colorful picture same with red one , please choice right one according color description) Please feel free contact with us if we are send wrong color , we will change right one directly Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.