Each set with 18 pictures of factory design well pattern for your easy use or reference, and users can design their own text and graphics, set up their own frame animation. It's a simple DIY operation. 
Approved by CE, FCC, and the RoHS certification. 

Technical parameters: 
Processor: High performance embedded CPU processor 
Sensor: Hall sensor 
Specification of LED: 128 RGB color LED 
Visual range: Double 
The need for speed: 6.2-9.3mi/h to display complete pattern 
The number of colors: Colorful 
Voltage range: 2.7V - 4.0V 
Specification of battery: 18650 rechargeable battery, can be used continuously for 15 hours or more. (1pc battery and 1pc battery charger are included in the package.) 
Current: 100-150mA 
Product size: 0.8*20in (2cm*50.5cm) 
Applicable models: 26 inch wheels and above 

Package includes: 
1x Bike Wheels light 
1x download line/ USB Cable 
1x cable ties 
1x user manuals 
1x software programming (NO need to download software from internet by yourself) 
1x software tutorials 
1x 18650 battery 
1x charger 
1x storage card (1GB) 
1x storage card reader