Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No good for exercising, Fine for sitting.

I bought this to play MP3s while walking / exercising. It is unusable for that purpose. It skips very often (like every minute) when in motion and when it starts to skip I have to stand still for a few seconds for it continue. Perhaps my unit is defective. It was cheap and is usable for sitting in one place so I won't bother returning it but I do have to buy a new portable MP3 player to walk around with. I'll probably find an ac adapter for this and leave it at work. For the price if it gets stolen it's no big deal.I think the controls (buttons) are very well designed and the price was the lowest I found.