I have the box for my phone and especially for occasional music listening at work, at nights with friends or also for home to enjoy the night radio plays. The sound is always better than the. From the mobile phone speakers, also the volume can thus regulate fine and also quieter than exclusively through the phone speaker is otherwise possible, which seems to me at the above-mentioned radio plays benefit
The speakerphone I tried only once, but keep them far for not relvant because my opponent understands me better if I traditionally holding the phone at the ear and speak with him.
One point deduction there with me because the confirmation sound when turning on / off is realtiv noisy and because the Bluetooth connection has been disconnected for some reason a few times. But that was previously rare.
I recommend the way out the Bluetooth connection turn the phone before the speaker is turned on. Then the connection is working properly.