The speakers are 16 cm wide, 24 cm high and 26 cm deep, taking into account the cables, which should not be bent too much. I don't know about the system itself, but it's really very compact. I think the sound is okay, but the remote control is a bit weak in receiving/transmitting when there is something in between, sometimes you have to press several times. The system also has a 3/10 second delay with Bluetooth. So if you watch videos and want to play the sound via Bluetooth, I would recommend something more home cinema-like. Panasonic replied that this delay is normal with this system. Even a UE Boom 2 can do this without delay, which I find very weak!
The correct dimensions are given with the product on the Digitec homepage, separated according to main unit and speakers. The system is small, has good sound, great reception and I would buy it again at any time. It's very inconspicuous in our bookcase.