mine works fine. its frozen once, i read the manual thing, and it said to press a combination of the top, center and bottom button(press 2 of them, forget which 2 it was tho, but its outa those 3) and it started up fine. once the battery drained outa no where, charged it n its been fine since. music lasts all day skiing, including ride there and home(1.5-2 hrs each way)
mines been perfect