Garmin forerunner 310xt hrm bundle this bundle includes the forerunner 310xt with premium hrm cadence sensor and quick release kit the quick release kit is the ideal training aid for multi sport enthusiasts who want to switch between disciplines without their kit slowing them down the quick release kit transfers the watch from wrist to bike and vice versa in seconds for a clear view of progress and performance throughout the training session or race the wrist bracket utilises forerunner 31