HRM. Polar S510 v S710

The S710 does not have SonicLink to upload your data from watch/monitor to PC by loud speakers. You can upload and download by IR. You can download data from PC to watch/monitor by loud speakers but not vice versa. The IR USB connection may be useful for you when available?
Thanx Vo2, I went our and bought the S510 with the cadence sensor. Must say that the extra info on the S510 does help a lot. I did my first race with it today and was suprised when I downloaded the excercise file to see my "time spent in zones" layout.

Thanks again Vo2, best buy since my Bianchi :D