Instruct: Classify the given review into positive or negative sentiment.
Query: Worthless!!

My wife bought these for our two sons (4 and 3 years old) also a set for my nephews (8 and 5 years old). We thought we better test them before we gave them as gifts. They are worthless. At 15 feet I could barely hear my wife. The static is so loud when you are not pushing the talk button that you can't even stand to have them on for more than a minute or two. Don't waste you time with these. We are taking back both pairs in the next day of two.