The DKN Speedbike computer 1.3 is compatible with the X-run, Z-11, Eclipse & other speed bikes (except the Racer Pro & AX-1). It features a clear & bright backlit LCD display. It begins its work once the user starts spinning & gives the feedback on speed, distance, time, calories burnt & heart rate (if used with an optional DKN HR transmitter). It comes supplied with a magnet sensor & computer head.