wahoo blue sc speed and cadence sensorDelivery in 1 2 days (Republic of Ireland) Delivery in 3 5 days (Europe) The Wahoo BlueSC 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 Wahoo SYSTM and Zwift, or paired to your bike computer. It's weatherproof, small with a low drag profile, and comes with a rubber