Features:

【Size (L*W*T)】: 
16.3 x 3.7 x1.4cm/6.41"x1.45"x0.55"(approx) 
Power by 3 x AAA battery (Not include) 
 

【16-LED and 32pcs Colourful Patterns】
Spoke lights for bike wheels are made of 16PCS RGB Leds, 32 Different Patterns Change.
This cool bike wheel lights are Ultra Bright can keep you visible from all angels so make your night cycling more safety and fun! You aren't the 'invisible' cyclist on the road anymore. 
 

【Ergonomic Design&Convenient and Energy 】 
Our bike wheel lights are controlled by riding speed, as pictures show, the faster you ride, the more complete and beautiful the patterns are!
When riding speed reaches 25 mile/h, the patterns will become complete.
It also has light sensor and movement sensor,when you don't ride the spoke lights will be off within 60 seconds automatically ,convenient and energy saving.
LED bike spoke lights Without button for power on/off. 
 

【Waterproof Designed 】
Bike wheel lights led waterproof designed. It enhances visibility at night and during bad weather, such as rain and snow.
So especially useful if you fancy a late night bike ride. 
 

【FITS MOST BIKES & High Brightness】
Our LED bicycle wheel lights fits most standared bikes that have standard round spokes and the wheel diameter is above 20 inches.
Not suitable for bicycles with wide spokes or sparse spokes.
It is so easy and quick to install to foldable bike, road bike, mountain bike and so on.