Wahoo Blue Speed & Cadence sensor with Bluetooth and ANT+.
The Wahoo Blue SC Speed and Cadence sensor transforms your phone into a powerful cycling computer. Using Bluetooth Smart and ANT+ technology, it tracks cycling speed, cadence, and distance which can be paired with your favorite cycling app including The Sufferfest and Zwift, or paired to your Wahoo bike computer. It's weatherproof, small with a low drag profile, and comes with a rubber band and zip tie mounts.
Specifications:

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