Polar - #TeamPolar, we've got a bunch of updates for you: - M400 and V800 firmware - Flow web service - Flow app iOS And the icing on the cake: Flow app
User manual Polar M400 HR (English - 96 pages)
Polar M400 | Analysis, full test and opinion
Recenzja Polar M400 - GOULTRA.PL
Polar M400 review | TechRadar
Tester Polar M400 HR biały - Przetestuj pulsometr
Polar M400 Hr Czarny - Pulsometry - Ceny i opinie - Ceneo.pl
Polar M400 Czarny - Pulsometry - Ceny i opinie - Ceneo.pl
Polar M400 gets Smart Notifications with latest update - EyeOnMobility