DES: Wireless Transmitter headphone w/FM Scan Radio Item no:WH-101 Features: 1.Listen to TV, Radio,MP3s,CDs and More via Wireless Transmitter 2.Wireless Operation Allows Free Movement. 3.Built-in FM Scan Radio and Stereo Headphones for Quality Sound. 4.Signal Travels Through Most Walls and Floors 5.Battery Operation----No Wires or Power Plugs 6.Easy Hook-Up with Included Mini Plug Cable FM Scan : 88Mhz~108Mhz /Wireless Transmitter: 84Mhz Specification: -FM SCAN FUNCTION -WIRELESS HEADPHONE FUNCTION -POWER BY 2 AAA ALKALINE BATTERIES