The Aventon BC201 Display provides you real time data for speed, distance, battery level, pedal assist level, and more. Programmed for either 27.5" or 29" wheels you&';ll be sure to have accurate information for the Ramblas that you are riding. Sync with your Aventon mobile app to track your adventures and hit the trails! Features: Includes Ramblas display w/ hardwired handlebar control pad Select your bike size before adding to cart!