The Bluetooth connection acts in addition to the music playback, for which the device is likely to be mainly intended, as "Telephone Headset" for which a microphone is integrated into the SoleMate. The voice quality was acceptable and no more echoes on the opposite side.
You instead use Bluetooth The included jack cable for connection, the Bluetooth connection is automatically deactivated. This wins you add a lot of battery life. If you want the device, for example as a substitute for miserable laptop speakers can be used to supply power during operation the speaker directly via micro-USB. The disadvantage here is only the brevity of the enclosed jack cable, however, this makes it possible to attach the cable directly below the device when it is not needed, so you do not lose it. A USB cable is not in the device, but that are likely most users do not need anyway, since you can recharge the SoleMate with any cell phone charger.
Negative only fall on little things: The SoleMate are each time a loud, low-frequency sound from. In addition, it shares with "Sole Mate is connected" with that it has now built up a Bluetooth connection. As both information is also displayed via LED vorhander could have to save this information, especially as the volume is too high. In addition, the built-in device volume keys adjust only the volume of the player support device, but not the volume of the device itself, this appears to have a solid gain. Usually that's not bad, but results for example in my phone to the fact that a relatively high minimum volume can not be undershot.
Overall, the Sole Mate is but a good size for its speakers which can be useful for many applications.