On the top there are the on / off switch, the track selection buttons and the volume buttons.
Charged the cube is in 5-6 hours.
The battery life is about 20 hours, depending on volume of the music.
The Bluetooth pairing (HTC, iPad, iMac) done quickly and easily.
Coupled I have the speakers with the iMac,
the music volume can be controlled via iTunes or via the keys of the cube.
The track selection on the cube can be controlled.
The sound is surprisingly good for this speaker size and convinced me.