Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Battery life is terrible and device stops working!

I wouldn't recommend this device. I echo the other users comments concerning battery life. And both of my devices -- one for home and the other for office -- have stopped working. I'm not a techie and have no idea how to fix them, thus I've wound up throwing the out. This device is a waste of money. I suggest purchasing another.