Positives: The donning and doffing is smooth, the high wearing comfort. You can feel not the device even after prolonged running. Multiple there was body contact (I have worn the device at several soccer training units) and harder hits, without any interference was observed. Even rain had no effect, despite not secure water resistance.
Charging the device lasts fifteen minutes and then keeps up half a dozen workouts country. The Konnektierung with the app via Bluetooth is completely free of problems, the representation of the performance simple but clear.
Negatives: The bracelet are manually adjusted to the appropriate length that is, with the scissors. In general, the bracelet looks rather cheap, which detract from the overall visual impression.
I would not use the knife adeVital activity throughout the day, as some of my Mitrezensenten do it obviously. To me it is mainly used for power control during training and here he does his job well. Whether the number of kilometers run is accurate to ten or twenty meters, I can not tell, but for the general overview, the device performs its job well and reliable.
The display over a defined period I really like the interaction with the smartphone app is flawless.
All in all I would be more than satisfied if for the Android app would actually exist. That this is still not the case, my benefit greatly restricts. For this reason, only 3 out of 5 stars (otherwise there would be 4).
