Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lemon Laser Pointer (possibly due to switch)

This "Standard Red Laser Pointer" is of substandard quality and your beam mileage may vary. That is evident, right away, from the screws used to cap the battery barrel. The laser beam turned out flaky on the one I received. It would switch off, or dim randomly. It is likely that the switch is making a flaky contact. During a presentation, there are many worries on the mind and a randomly working laser pointer does not help that situation. The quality comment may be true of this item too which has a similar image:Instapark 5mW 650nm Red Laser PointerI also bought it from seller HDE which does not refund shipping charges even if item is defective.