Here hums and whimpers of the speakers in Bluetooth mode terribly. When operating on the mobile it stays that way, while they are controlled from the speaker of one sometimes also manages to shut down the drone. By the time the next song starts, and he hums merrily In whimpers louder pieces not so tragic, but especially in quiet pieces falling on already extreme.
When playing back through the AUX cable (even shorter than the USB cable) it is not booming. This usage comes with me but unfortunately not in question.
In addition, no detailed manual is only a Quick Start Guide. Whether you can turn off the annoying message when starting, stopping and wait for Bluetooth connection, so I do not know unfortunately.
There is an LED light (blue or red light) front, on the left edge, but behind the grille, made me now not particularly disturbed.
Whether accepting phone calls works, I can not say I did not try.
In weight of the speaker fits comfortably in your hand, even from a processing perspective, can not be bitching.
Speaker is now back yet. Pity!