Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's great so far - but with a warning!

It may be a bit early for me to leave a rave review, since I only received it yesterday (good job, Amazon!).So far, I like it. I do think there's a lot to learn about using it & features that I don't yet understand, so I'm still creeping up the learning curve.HOWEVER, the warning -- Do NOT, DO NOT, rely on the button that screws into the back of the unit to hang it from the belt clip or a lanyard. I lost my brand new unit while riding my horse today because the stupid button unscrewed itself and the GPS dropped off the belt clip. Luckily it wasn't too far up the trail from where I realized I lost it (I do wish they'd make these in bright orange or some other color that isn't camouflaged in the woods).