When connecting the speakers, however, via Bluetooth to the phone, I am not at all satisfied.
Once the mobile is more than 1m away from the speaker, there are always dropouts music.
After 3m one can hardly speak of connection, because the speaker makes more break when he plays music already.
My first guess was that the speaker battery may be empty, but even after charging, it was no better.
On mobile it was not, I've tried 2 different phones.
The return went smoothly.