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, the PPA Select also offers channellock capability (to prevent accidental channel change) and a battery-saving Sleep Mode. A versatile 3.5mm stereo/mono jack allows for a variety of earphone and headphone options, and is neckloop/telecoil-equipped-hearing-aid compatible. The stylish, impact-resistant PPA Select single-channel receiver is compatible with any Williams AV Personal PA transmitter operating on the 72-76 MHz bandwidth. The PPA Select includes two AA alkaline batteries for up to 50 hours of long-lasting operation.