I was delighted with the sound.
The problem was the charging. After a day or two not used I would find 1 charged and the other not yet with the case showing 4 lights.
Cambridge were friendly and replaced them. New case but charging problems again. This time if not used for a couple days they don't work despite case showing white lights. You mess about pulling them out pushing them in - and charging the case if you happen to be near a source despite the white lights already on and maybe after a while they deign to connect.
Previously I had a £30 set whose sound was inferior but they worked faultlessly.
I would recommend avoiding this model despite the good quality sound