Works as expected, low volume which is more than enough for sleeping sounds, or music playing gently. Also they're comfortable to sleep in a pillow, as they do not insert into your ear. I am yet to try sleeping but suspect that may fall out in the bed,. But for just $3-$4 amazing value & well worth giving them a try for a restless sleeper like me. Tip - connection was not automatic, needed to press the grey button to enter pairing mode after removing from the charging case..