Powertap joule gpsthe joule gps does everything the original joule gps did and then some our newest cycling computer acquires gps in the blink of an eye seamlessly connects directly to the powertap mobile app for automated ride downloads and comes with an eye catching powertap orange back case using the powertap mobile app the gps gives you freedom to choose between ant and bluetooth smart without having to think about it features conveniently downloads rides wirelessly via powertap mob