COOL VARIOUS PATTERNS, BRIGHT & SAFETY - great gift for night riding Each A12 led bike spoke light is made of 14PCS RGB Leds, can be seen from both sides, each led can flash 8 colors, high brightness, ensure your bike visible at night. Moreover, this led bike wheel lights can flash 30 different patterns, patterns change every 4 seconds. AUTOMATIC LIGHTING, WITH MANUAL SWITCH - energy saving and convenient A12 bike spoke lights are controlled by motion sensor & manual, differs from other bike wheel lights. After the bike spoke lights are installed, press "on/off" button, enter auto mode. At this time, light glows when bike moves, turns off after stop moving for 60 seconds. You can also press button again to turn off the bicycle spoke lights immediately. INTERESTING PATTERN EFFECT SHOWN DESIGN - controlled by riding speed, as picture shows, the faster you ride, the more complete and beautiful the patterns are When riding speed reaches 18.6 mile/h, the patterns will become complete, cool & perfect. If speed is below 18.6 mile/h, the bicycle wheel lights will show half or part of the pattern. MINI SIZE, LIGHTWEIGHT & WATERPROOF -Easy to install and remove A12 bike tire light is 3.74*2.76*0.59 inch(W*L*H), weighs only 2oz, safety cute design, wont affect cycling speed and gravity force. Can be used in any weather conditions, but pls dont soak the bicycle tire lights in water FIT STANDARD SPOKE BICYCLES, 16 INCHES & ABOVE - not suitable for bicycles with wide spokes or sparse spokes, Awesome gifts for boys, girls, men, women, kids, everyone. You will be the focus at night. Auto open & close(controlled by motion sensor), with Manual Switch. Press "on/off" button, enter auto mode. At this time, light glows when bike moves, turns off after stop moving for 60 seconds. Or you can press "on/off" button again to turn off the bike wheel lights immediately. Great Birthday Gifts, Christmas Presents for Your Boys, Girls, Husband, Friends or Yourself No Tools Required for Installation Don't need any tools, you can have your lights installed in 3 minutes or less. Fits for standard spoke bikes, 16 inch & above. Pls note, not suits bikes with wide spokes or sparse spokes. Personalize Your Bike, Be the Coolest 30 kinds of different patterns change every 4 seconds, very cool looking. All passers-by will envy you. Waterproof: IPX5. Can be used in any weather conditions, but pls don't soak this bicycle spoke lights in water. Safe and Attractive, Beautiful and Safe for Nighttime RidingGain increased visibility from all directions, ensure the safety of you and your loved ones. Mini size, safety cute design. Won't affect cycling speed and gravity force. Size: 3.74 * 2.76 * 0.59 inches( W * L* H ). Weight: 2oz. How to install the Bike Tire Light? Install the battery, then unscrew the screws on the bike wheel light. As the picture shows, place the wheel light on the spoke. Insert the screw from behind and secure the spokes in the groove of the screw. Finally, tighten the nut. Interesting design: Different riding speed, different pattern effect shown