Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't Buy These

We use 6 - 8 handheld radios at our business to communicate across multiple floors and buildings. We have gone through two generations of Motorola Talkabouts, with this line being the third. These are the worst of them all. The last generation of blue and black ones was fairly bad, with several ceasing to work within days of purchase, and so we thought we would upgrade to the next model up. Of the 6 we purchased, 5 did not have adequate sound transmission - cutting off at the beginning and end of transmission or not working at all. These are junk, don't waste your money! (My one star is because they are attractive to look at.)