For this size great sound

Processing is robust. The device can withstand anything. The operation is self-explanatory, according meager is the Quick Start Guide. What is not explained in detail there is the possibility to connect several loudspeakers in series (daisy chain).
The integrated cable is a bit short for connection to a mobile phone or MP3 player, but ok for the connection and use as a stereo speaker.
Bass and sound convinced me pre-listening, even more at home, where the rooms are smaller and quieter than in the sales room of an electric market.
The Bluetooth connection went smoothly (tip: only when Bluetooth player or smartphone Activate and then on speakers), no input of passwords necessary. The name is also unique (JBL clip) and no cryptic number and letter combinations.
The short battery runtime of the other reviews I can not confirm. I'm going to probably still buy a second speaker.