1. XuanWheel, a APP PROGRAMMABLE bicycle light that can turn your bicycle wheel into a colorful screen. The light shines both sides, and is controlled via APP.
2. APP DIY: Search “xuanwheel”in google play or APP store to download APP. You can add GIFs\photos\text and DIY any pictures by APP. Then send it to Xuanwheel in one second. Support Bluetooth 4.0, support Android 4.3 and above, iPhone 4S and above system.
3. DISPLAYING CLEAR PICS AT A LOW SPEED of 15km/h-60km/h.S1 consists of 96 ultra-bright RGB LEDs and two led bars, which is much more than normal spokes.
4. EASY TO INSTALL: Fits 24 inches bike wheel and above sizes.Installation tutorial available. For more imformation: https://youtu.be/jvIGSQMg4sw
You can buy it on Amazon, https://www.amazon.com/dp/B0752SKG5N