Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not working properly then stopped working altogether

Like the previous reviewer said, the device plugs don't stay in the sockets.Mine stopped working after just a few weeks. Called technical support, who asked me to send it back for replacement. Maxell does not provide return shipping. Not worth the hassel and mailing cost. Have to buy a new one, but this time won't be maxell.BTW, only 90-day warranty.