Garmin Cadence/Speed Kit is compatible with Edge 305/500/705/800 and Forerunner 305/405.
Speed & Cadence Kit
* This kit comes with a sensor unit, two magnets, and zip-ties for mounting purposes
* Can also measure rear wheel speed for use on indoor trainer
- Good sensor and value for the money.Review by Andrew
- This sensor does take some time to install but once you get the hang of it.....it goes a lot quick. The data picked up is superb and fairly accurate. Definitely must buy if you have a Garmin GPS watch. (Posted on 7/17/11)