TomTom Runner and Multi-Sport use Bluetooth® Smart to connect to sensors. Bluetooth Smart is a version of Bluetooth which is designed for connecting small, simple sensors to smartphones and computers.
We have tested TomTom Runner and TomTom Multi-Sport with the following heart rate monitors:
We have tested TomTom Multi-Sport with the following cadence sensors:
However, you should be able to use any Bluetooth Smart heart rate monitor with TomTom Runner and Multi-Sport*. You should be able to use any Bluetooth Smart speed and cadence sensor with TomTom Multi-Sport.
Note: The Polar Wearlink Transmitter Nike heart rate monitor that works with the Nike+ SportWatch GPS is not compatible with TomTom Runner and Multi-Sport.
* TheTomTom Heart Rate Monitor does not work under water.