Excelity&reg;Bicycle Wheel Spoke Wire Light with 7 LED Lamp and 30 Patterns The product us consist of 7Pcs colorful LEDs,single LED can flash 8 colors It can flash 30 different kinds of patterns, patterns will be changed every 4 seconds Pattern is clear and completely when speed up to 20km/h Equipped with light sensor and movement sensor,flash only at night and action,it will work and save your power when not riding