DH is an old model- the S720i, the one which is a watch (not the bike monted ones). The best thing about a watch HR is that if you want to use it for other activities (say swimming, running etc) you can were as a bike only one can only be used on the bike.

From my manual it says the F11 can send data via Polar web link to the polar personal trainer.com web service and recieve data with the Polar uplink tool. This is all by speakers and microphones.