Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't last

I was impressed by the laser and after reading some of the reviews had hopes. Alas as I read for some, it didn't hold it's sight very well, and after about 2 clips it just stopped working. It may be a nice laser pointer, but as soon as you attach it to anything with recoil, it seems to vibrate itself to death.