Synchronization with the Garmin Connect app works perfectly and the Bluetooth connection to the phone is held properly. Settings or desired changes are made quickly and easily in the Garmin app on the iPhone.
Like all fitness tracker, which are integrated into a bracelet, even movements of the arm to be registered as an activity. The "measured steps" therefore should not take as accurate one. In any case, I animated the Vivo Smart to exercise more, what's the real purpose of the thing. I also use the alarm clock of the band and am very happy with the battery life of the belt. A good week holds the part easily.
I have expanded my mechanical watch is the main SmartWatch features with the Vivo Smart and the combination is even waterproof. The purchase of actually envisaged Apple Watch is therefore unnecessary for me!