I have a I river housing (100M version) with a 128m MP3 player has been well used but still 100% Works well above 30M sound go’s a bit tinny below 30 and sounds very odd at 60M I paid a stupid amount for this about 5 years ago Make me an offer Nick Warning *(Do not listen to any REM songs below 50M on air)* deep REM has been linked to many suicides