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Programmable bicycle wheel light Serve as a mobile signal light for night ride security Consists of 96(S1) ultra-bright RGB LEDs which ensures bright, clear, and vivid display effect 750-1500mAh built-in rechargeable battery, keeping the power on for 10 hours when fully charged. It displays the clearest image in a speed of 10km/h-50km/h Shockproof and waterproof in all road/weather conditions Fits for 24 inches bike wheel or above. Easy to install! Supports Bluetooth 4.0, Android 4.3 and above, iOS 8.0 and above system

1. Why the image displayed on XuanWheel is regular illumination all along rather than the image transmitted by app?
   The booting pattern of XuanWheel are some sequentially illuminated LEDs flowing regularly. If there aren’t any images, first make sure each magnet has fixed to the white piece at the end of the light arm and two light arms are firmly connected by the linking wire. When you make sure the magnets have fixed to the white piece, three lights in the middle of the light arm will go out. Then open the menu to the left in app and make sure XuanWheel has connected to app through Bluetooth. In the end, you can change pictures freely by choosing a picture and clicking send button.
2. Why one of the light arm can’t normally display?
   If the auxiliary light arm can’t normally display while the main arm can function normally, please check whether the white piece(sensor) of the light arm has fixed to the magnet or not. If the patterns displayed by two light arms are not exactly the same, please make sure the linking wire connecting two arms has successfully connected and upload pictures again.
3. Can XuanWheel bind to mobile phone?
   You can active the binding function at setting menu. After activating, XuanWheel would automatically bind to corresponding bicycle wheel when successfully connected and the certain wheel in app can not connect to other XuanWheel. When disconnecting, discharge binding the front wheel and back wheel on setting page.
4. What should i do if the LED Lights got broken?
   The LED Lights have high quality and won't break easily. Its lifespan usually is 3-5years. We also provide you with quality guarantee.

Tail Light Function: With wireless remote to control the turn signals to let people behind you see where you are going. Records and stores cadence data such as gradient, speed, distance, and duration in conjunction with the free Livall app. Universal bike/motorcycle mount for most smartphones.

BLUETOOTH SMART (BLE 4.0) TRANSMISSION - Supports heart rate monitor. It is also able to accurately your cadence and speed data by connecting to Shanren Cadence sensor and Speed sensor (not included). DOUBLE STAR POSITIONING - GPS+GLONASS Navigation ensures accurate positioning of your ride. DETACHABLE WARNING LED LIGHT - 300 lumens with adjustable brightness; color can be changed according to your riding speed, safer and more efficient. 80 HOURS BATTERY LIFE: DISCOVERY GPS Cycle Computer can work 80 hours for one charge, which is longer than the ordinary bike computer. NO MAGNETS, EASY TO INSTALL - Simply attach the speed sensor to the hub and fasten the cadence sensor to crank arm and there you go. MULTILINGUAL APP - You can share data via Strava, Facebook, Twitter, Instagram besides data record. ACRYLIC OPHTHALMIC LENS - Scratch-resistant, Abrasion proof, more Transparent than PC CD FINGERPRINT BUTTON DESIGN - Convenient for night riding operation.