Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Slow product. Terrible software and customer service!

My first impression with the Garmin V is equal to a visit to the dentist. The Garmin V GPS receiver comes with a serial cable (so 80's and sooo slow) and no USB nor Mac support. The process of getting the software installed took aprox. 2 hours. You MUST be on-line to get the key that will unlock the software that will give yout the serial number that must be sent via email and then must jump through another hoop - anyway you get the idea. Better have brand new batteries in the device. I spent four perfectly good batteries just getting the mapset into the device.The downloading process took 30 mintes. The time remaining bar goes up instead of down???? Don't even think about contacting support since they are only available through email.