Ready for a duet? Amp up the fun of your new Singing Machine 4TV with an extra interactive microphone! Made specifically for the 4TV, the 4TV Mic connects through the unit’s designated USB port and doubles as a control for all user features- Choose to play MP3+G or CD+G, change your song, adjust your vocal features and volume- all through the built in menu on your 4TV microphone! Singing Machine 4TV Microphone features: -USB interactive microphone -Compatible with Singing Machine 4TV user interface -Controls all 4TV features -Can also be used with PC/Mac computers