Fitbit Ionic
29.23 mm, Aluminium
Fitbit Ionic
29.23 mm, Aluminium
GPS integrated
Battery life
Wearing comfort
Looks very chic
Material & workmanship
I think they can all do the same thing. The price differences in the colours come, as with most other products - no matter which industry, from the production costs. A "special" colour is produced less, so you pay more per item. A colour like black, for example, can be produced many times over and therefore has better purchasing conditions.
According to tests, Polar belts should be compatible:
https://www.digitec.ch/de/Comparison/6191015-6191018
But apparently the values of the watch are already quite good and almost exactly the same of the strap.
http://fitnessmodern.de/fitbit-ionic-test/
It is planned to display this clock in our showrooms.