Polar: 871 calories, Avg HR 119, Max Hr 171, Min 64, Duration 1:40:30 about 21% Fat & 795 Carbs
Microsoft Band: 1125 calories, Avg HR 119, Max 186, Min 73, Duration 1:40:31 about 50% Fats & 50% Carbs
(see figures below)
As seen in the two graphs, the polar is much higher resolution (almost not...