Instruct: Classify an Amazon review into positive or negative sentiment.
Query: If I could give it a zero...avoid this product

Avoid this product. I have wrestled with this horrible device for weeks, scouring the user manual, trying to sort it out. Its functions are not intuitive, you can easily get lost in a maze of sub-functions. First of all, it does not compute true altitude, it computes density altitude, which is meaningful to pilots (of which I am one) but useless as a tool for gauging...altitude (also occasionally handy to pilots.) This morning, after weeks of experimentation trying to calibrate the barometric pressure, the device started beeping every 30 seconds, I don't know why. My neighbor had his burn barrel going for the spring limb clean up. Without a second thought, I tossed the Brunton in. Haven't felt this good in a while. Just wish I had crushed it first. I have never had a piece of electronics actually enrage me (okay, my first laptop, but I eventually got that going right) and strongly urge you not to get this hideous product.