Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Player's OK, but Customer Service Sucks!

As long as the units works it's OK. Not the best, but not the worst. However when it stops working (which mine did after about 4 months ownership, and use on 3 round-trip flights and 2 trips to the gym to use the stationary bike) after what I would call, not much use it stops working. Why? the batteries would not stay in place, hence no power to the unit. Considering I had not been using it for jogging etc., I would have expected it to last more than 4 months!! Customer service was not very friendly or responsive to a player dying after such little use. I had to pay for shipping and insurance for them to repair the unit. So keep this mind when you think of buying this unit!