As a special feature compared to other speakers, he has a replaceable battery. It is a simple nachzukaufenden battery type 18650. The run time was in the first run almost 7 hours.
The speaker has a decent weight even without the battery and a high quality finish. The black piano finish it attracts fingerprints but magically and therefore feels more comfortable at home than outside. By under-built anti-slip feet of the speakers does not slip away.
Behind the metal grille sit a kind of bass module and 2 tweeters in the middle. After testing some songs I would describe the sound as neutrally and with sufficient bass. The speakers can be able to play even at high volume levels without distorting this case. The sound sounds like as if you have a much larger speakers in front of him - with one of the best I've ever heard in a speaker of this size. The bass module in the middle can be heard out well, there is already decent bass from the small device.
It is operated via buttons on the device. The speaker also features a speakerphone, so that you can make calls with it easily. In a sample call this went smoothly.
This Bluetooth speaker like me well overall. Criticism I only suspend it that any louder / quieter acknowledged via the hardware buttons with a * beep *, bothers me a little.