Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ouch!

This compass will probably function with no problems. Watch out for the mirror though! On the one I purchased, the hinge is so tight that it is difficult to open and close--and it's easy to accidentally pinch your finger between the mirror and the compass base when it pops all the way open. I know it sounds like a minor complaint, but it hurts! I MUCH prefer the comparable Brunton that I just purchased--it seems like it's higher quality and a better design.