Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good idea but poor product

It was great when it worked. The vibration was slightly too mild but it was enough to wake me. I purchased this more for the purpose of not waking my roommates and less for my sleep problems. For anyone with a genuine sleeping disorder, I would not at all recommend this clock for the reason that it's simply too weak to really grab your attention.Even if the clock were powerful enough, the stupid thing died after only four months of use. I put in new batteries, took out the batteries that were fresh, put in different ones... nothing. The clock worked just fine, but neither the alarm or vibrator would go off when it was supposed to. If I hit "test," both would work just fine. So there was something wrong with the connection between the set alarm and the actual execution of the command.All in all, just spend the extra money to get a quality vibrating alarm clock that will actually last. Four months is just not worth a solid spend.