B0001YFZ46 Sony MDR-RF960RK 900 MHz RF Wireless Headphones with Auto Tuning (Discontinued by Manufacturer)

900 Mhz Transmission
Closed-Type Headphone
Transmits Through Walls, Ceilings & Floors
30Mm Driver For Deep Bass
Comfortable Leather-Like Ear Pad
RF wireless headphone system using FM transmission system
Up to 150-foot transmission range with auto frequency tuning/reception