[ 7-COLOR andamp; 18 MODES]: Colors and modes are controlled by only one power button on the light. Long press the power button to turn on/off the lights, single press the button to change light color and modes. Available color: red, green, blue, navy, pink, yellow, white and Auto 7-color changing mode. It is very convenient to choose your favorite color and mode from single color flash, single color steady on and Auto 7-color changing mode. [SAFE andamp; COOL LIGHTS]: Made of premium eco-friendly material, the bike wheel and frame lights are durable and lightweight. Colorful bike wheel tire lights designed for cycling decoration and safe riding. Great visibility from all directions allows you enjoy excellent night riding. Multicolor bike wheel lights compatible for almost all bikes including road bikes, mountain bikes, hybrid bikes, triathlon bikes and touring bicycles. IP 65 Waterproof ultra bright lights work well in rainy or snowy day [USB RECHARGEABLE]: The bike wheel hub lights are USB rechargeable, no battery needed any more. Bicycle wheel lights suitable for hub diameter less than 30mm, please measure the thickness of your hub before purchasing. About 2 hours can be fully charged, in flashing mode, working time can up to 8-12 hours. When the indicator light is red, it is recharging the battery. When the indicator is green, means the battery is full. [EASY INSTALL andamp; REMOVE]: Awesome bicycle lights with amazing easy installation and removal. The cute safety tire lights can be fixed on the bike firmly within one minute. Select suitable sized foam hub pads(included) to stick on the inner ring of the light, encircle the light in the center of the hub, and buckle up. No other tools needed! 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.