A retro look with modern quality, the ReTrak Retractable Premier Cassette Adapter with Hands-free Microphone will amplify your audio listening experience when you're on the go. Jam your favorite songs or listen to a good podcast using this cassette adapter with a handsfree microphone that connects your iPod, MP3 player, or portable CD player to your car stereo. Whether you're driving down the street or across the country, you can pop the adapter into your car's tape deck and call a friend or blast hi-fi sound through your speakers. This cassette adapter with hands-free microphone is a lifesaver when you travel and can't find a decent radio station in your rental car. Let your friends DJ from the backseat with a 3.9 ft. cord. When the trip is over, the cassette adapter retracts for compact storage with a single button.