Wahoo Fitness BLUE SC Speed/Cadence Sensor

You might be saving up for a fancy cycling computer, but you aren't quite ready to make the jump and buy one just yet. In the meantime, you can still use your smartphone to keep track of your ride data with Wahoo's BLUE SC SpeedCadence Sensor. It will track cadence, speed, and distance measurements, and is compatible with Bluetooth 4. 0 and ANT technology. Mount it to your frame using the included rubber band and zip tie mounts, and it will withstand inclement weather without a problem. It's also a healthy choice for your wallet as you continue to save for that shiny handlebar gadget you've been eyeing.