Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I wouldn't buy this if I were you

I've bought it when it was only available through amazon. It freezes all the time, Joystick button broke after a week usage, It charges in 6 hours from USB, it is not compatible with ordinary USB-wall chargers, you need to buy a charger with USB sync. Its sound quality is quite good, screen is also great but I wouldn't buy it if I were you, go for a better and more robust alternative...