The topeak panobike is a compact and easy to mount cadence and speed sensor for use with panobike app the intelligent sensor used automatically stores ride speed and distance data with or without your bluetooth smart ready phone then simply synchronizes later this topeak accessory mounts onto any chainstay and works with any bluetooth smart enabled system topeak panobike speed cadence sensor features mounts to any chainstay works with any bluetooth smart enabled systems 1800 hou