"Lernew" is an intelligent Bluetooth system, which is used for E-Bike and ordinary bicycle, via Bluetooth connection with devices, and replaces the existing E-Bike of display and ordinary bicycle. The E-Bike display has now been replaced by a table of bicycle, to achieve the speed of the phone, kilometers, top speed, average speed, power and other related information in real time display, can quickly call map navigation. To provide many kinds of operating mode switch and can real-time acquisition vehicle error message sent to the user.