Wahoo Fitness Blue SC Speed and Cadence Sensor

The Wahoo Blue SC Speed and Cadence Sensor transforms your iPhone or Android phone into a powerful cycling computer. Using Bluetooth 4.0 and ANT+ technology, it tracks cycling speed, cadence, and distance which can be paired with your favorite cycling app including Cyclemeter and Strava. It's weatherproof, small with a low drag profile, and comes with a rubber band and zip tie mounts for easy installation.

• Measures instantaneous bike speed and pedaling cadence
• Mounts on rear chain stay and uses spoke and crank magnets to track bike speed and pedal rotations per minute
• Bluetooth 4.0 (aka Bluetooth Smart) wireless technology
• Does not require any extra hardware for use
• Long-lasting, replaceable coin cell battery; no need for extra cables or recharging
• Water and shock proof: IPX7 Certified
• Weight: 39 grams