Term as SmartWatch ca 10-12 days. My Pebble has never lasted this long and had also constantly having trouble connecting to iPhone6. The VivoActive shows me all messages reliably and is very easy to read in my opinion.
The GPSGenauigkeit typical Garmin very good and the satellite will be found quickly. The clock reacts very quickly (much better than my old Forerunner 610). Garmin Connect I'm pretty good deal for some time. I synce data with rubiTrack on my Mac, so I must not produce more Kableverbindung to the computer.
However, the vibrator could be slightly stronger or longer (sometimes "feel about" I just him) and the VivoActive can not use stored workout. But that's not so bad, because I always need only interval training and that can be realized on the recovery function.
I think the clock is a good buy.