
Polar Pro replacement belt size M - XXL
Polar Pro replacement belt size M - XXL
It is just the rubber band itself. Without a sensor. -> https://www.polar.com/it/prodotti_polar/accessori/elastico_polar_pro
I have two H7 and two H10 heart rate belts. I have never tried out whether the 10 transmitter fits on an H7 belt. However, the design of the two belts is very different, so I doubt that they are compatible. Apart from that, I would highly recommend a complete change to an H10 anyway, as the wearing comfort has improved massively with this model.