Type: Wireless Wireless Type: IR Frequency Response: 30Hz-15KHz Features: Infrared (IR) technology transmits signal to headphone, reproducing audio signal while allowing you to roam freely about the room Dynamic element promotes extended frequency response Compact, lightweight design makes system ideal for extended listening sessions Foam ear cushions keep you in touch with your environment while you listen Adjustable, soft-rubber headband provides maximum comfort and customization Transmitter connects to most home systems through 3.5mm headphone jack or audio output