Xcellent Global Multi Function LCD Bicycle Cycling Computer (Black) Real-time display of the current speed, trip distance, riding time, trip time, calorie consumption and current time Easy view of the maximum speed, average speed ,total riding time, total riding distance and rotations per minute of the wheel Night light feature with high-brightness light source for a clear view of all data during your night trip Length unit options of kilometer/mile,Bicycle oil/maintenance reminder to secure your bicycle's best performance and service life Options of 12h/24h systems, stopwatch feature and alert feature for bicycle maintenance,A stopwatch for you to check the data in competitions