sensori garmin di velocita e cadenza bluetooth e antTrack your pedaling with these wireless speed and cadence sensors that are easy to install. With no magnets or other exposed parts for alignment, these sensors are easy to install, store, and move from bike to bike. The second generation Speed Sensor attaches to the hub of one of your wheels and automatically calibrates via the Edge cycle computer. The Cadence Sensor attaches to crank arms of any size and measures pedal strokes per minute. Sends real