Features:100% brand new and high qualitySpecially designed for the vocational rider or casual cyclistSimple to use， long lasting， and safety attachedEasy mount and release， installed in seconds before you get ready to rideSecure， remains securely locked in position， even during off-road useDurable and water resistantAppearance design， blade type hot wheelsLED strips easy heat dissipation and long service lifeSuitable for mountain bike， road bike， folding bike， etcHigh quality LED chips: 5050 SMDIt can flash 12 different kinds patterns， patterns will be changed every 4 secondsPattern is clear and completely when speed up to 20kms/hourEquipped with light sensor and movement sensor， flash only at night and action， it will not work and save power when not ridingMaterial: SiliconeCase Color: WhiteBattery:Powered by battery 2x CR2032 (included)Package Included1x Bicycle Wheel Spoke Light2x CR2032 Button Cell