I have one of these. It is one of the most wonderful things in the world. I've had mine since 2010, and I use it for eight hours a day, every single day. I plug it into a radio with a headphone jack and transmit to a Bluetooth headset. (My workplace does not allow either audible radios or visible headphones, but Bluetooth headsets are perfectly acceptable.) It transmits a good 30 feet, and I don't have to carry whatever is playing around with me. Granted, it isn't audiophile-quality, but, for what I'm listening to, I don't care. I just bought one of these as a backup - if my main one (which I paid $60 for in 2010, mind you) dies, I'll definitely want to have a backup.