Uses several Sonos products before but has lacked battery function. This is a height that adds flexibility and fantastic sound. Can easily take it to any room or in the garden. The only thing that doesn't get it a fifth is that it is booky in the default setting. If I switch to another network or take it home, it sometimes gets stuck in search mode and it can't even be turned off. Switch to BT mode usually goes well. Was pleasantly surprised by the sound and fullness that fit any room.