Flexible and simple. The PPA Select FM receiver features easy-to-use, seek-button channel selection with access to 17 pre-set wideband frequencies between 72-76 MHz. Digitally synthesized for even greater audio clarity and stability. A versatile 3.5mm stereo/mono jack allows for a variety of earphone and headphone options, and is neckloop/telecoil-equipped-hearing-aid compatible. System Includes: (1) PPA R37N Receiver (1) BAT 001-2 AA Alkaline Batteries (1) EAR 013 Single Mini Earbud Compatible with the following Williams Sound transmitters: PPA T46, PPA T45, PPA T45NET, PPA T27. NOTE: The PPA Select Receiver requires a transmitter operating on 72-76 MHz. The PPA Select is approved by the FCC for operation in U.S. Markets. The receiver cannot be used in all countries. Check with your government´s radio regulations for 72-76 MHz operation.