Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worked great... just not in my car

This compass worked perfectly... when I held it in my hand. When I tried to mount it to my dashboard, stray magnetic fields from who-knows-what confused it to the point that it couldn't work reliably. I ended up having to return this.If your car has weak enough magnetic fields, this compass will work great for you! It's easy to read. However, don't be surprised if you can't get a reliable reading.