When I first plugged it in to charge it, the battery was already at 61%, which led me to wonder if it was previously owned.  It did work fine, easy to set up and use, but this morning, after only 4 weeks, it wouldn't turn on.  Fortunately I was still within the 30 return period.  I immediately sent it back and already got notification from Amazon that my replacement has been sent out.  Thank you, Amazon, for being so prompt and efficient.  I just hope that my replacement is brand new, factory fresh, and lasts for a few years.