Williams Sound PFM PRO RCH Rechargeable FM Listening SystemThe rechargeable PFM PRO RCH delivers superior audio directly to the ear, enhancing sound at home, work, or school anywhere background noise or distance from the source makes listening difficult. Each system features 17 selectable channels on the 72 76 MHz band and has an operating range of up to 150 feet. A versatile 3. 5mm jack allows for a variety of earphones and headphone options, and is compatible with neckloops and telecoil equipped hearing