The Bluetooth hands-free multi-function device of TaoTronics since I spent two weeks on the road. Here the set is used as an extension to my Sony car radio. Although this can play MP3's via USB and jack, but unfortunately does not have Bluetooth. In addition, it has no speakerphone. By TaoTronics I have already solved these two requirements. The important thing is that on the radio, a phone jack is present. Older radios do not have that many. The small knob is stuck to the dashboard, plugged the jack into the radio, and the charger provides power through the cigarette lighter. Because two sockets are installed at the charger, and the navigation system with power can be supplied simultaneously. (The navigation system alone would indeed have a speakerphone; with this I'm unhappy because too low) Speakerphone mode itself is also fine. Only the operation I had to get used to something me at first.
The only drawback is the label on the back: from such a thin foam layer, which although very good and permanently stuck, but then no longer going well, if you want to remove the label after some time. That's why I stuck the TaoTronics with a power strip.
Conclusion: with my little test candidates I am very satisfied. Here the price-performance ratio, and therefore there is a recommendation and practical 5 Stars.
Addendum: after some period of use is now runtergfallen me the button part twice, because the adhesive pad no longer holds. The heat in the car now was probably too much. And now the ring is aussenrum loose. While it all works yet, but for the car you should take a Tesa power strip to attach.