Great benefit of the Microsoft Band is using your smartphone is optional while tracking sports activity. However when cycling in city to work or home naturally the phone and other necessities are with me, ready for tracking , listening podcasts, music even while in traffic (though not using noise cancelling headset what I normally do if travelling via public transport and by foot)
I have limited experience due to the only dozen times used so far, but had surprise when in the morning tracking cycling with GPS for an hour and back in the evening and was running out from battery. At the morning it had been 70% as start.
Found charging quite a lengthy process taking multiple hours till full charge.
I had tested my patience with syncronisation of data from the band to the IOS app, some of the cycling session only had been synchronised days later after countless restarts of the app, the iPhone and the Band as well. Had not found the pattern of the issues so far, however post synchronisation data is not showed up, the restart of the app reads up the data and show latest data.
The graphs can show diagram with speed, heart rate or elevation data.
The summary view has useful data of the ending heart rate and 1 and 2 minutes values to get a feel of recovery after the session. I am not sure of the recovery time calculation though, as HRV based measurement shows no degradation and requirement to have over 15 hours recovery after a mild cycling to work. I will dig for details of available how this is calculated and share it here.
General impression of the Microsoft Health app that shows less information on a screen compared to other fitness apps, you need to change, scroll and move around to get to the data content it has.