Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quiet Stopwatch with Flaws

I bought this stopwatch to keep accurate time during testing. A great plus is that it is silent. The stopwatch does not make any beeping sounds.But there were two significant negatives. First the battery lasted less than 5 months before dying on me. Second, the buttons need very hard presses. Sometimes I need to press the start/stop button twice for the press to register.