[deaddodo]

You literally just described the Garmin Fenix (or a vast majority of their more affordable options, the Fenix is just the Jack-of-all-trades model).

  1) Gets about 14 days with default sensors (HR, GPS, altimeter, barometer, compass, etc) enabled (turning on high resolution Sp02, for instance, will knock it down to 6-8 days)    
  2) Yup    
  3) Yup, all features requested    
  4) Technically, only for a few apps. And it supports Android's media APIs better than Apple's. But they're there. This is probably the weakest supported of your requirements.    
  5) Admirably.