Although otherwise stated in the manual, the sensors not work with the Polar Beat app (tested on 16/09. With an iPhone 5). In the App heart rate and running sensors are listed as supported, these two sensors not. I pull from 2 stars because a function described should work - if someone has bought the sensors for the beat app that would certainly be a reason for return!
Since the iPhone battery anyway long does (with Polar Beat and GPS about 1-1.5 hrs.), Do not bother me so much but. With the V800, the sensors operate in any case properly.
