Sony MDR-IF 630 RK

Ever wanted to kick off the annoying cord on your headphones? Now you can do it! Cordless Infrared Headphone system on the MDR-IF630RK has extended range up to 33 feet (10m) direct distance from the transmitter and offers full listening enjoyment throughout the room or listening area. Noise Reduction Transmission System is designed to reduce extraneous noise and hiss and allow the headphones to receive the signal more clearly (incompatible with other cordless headphone systems). Sound Mode Switch (Normal/Voice Enhanced) on headphones provides for Normal for high fidelity listening or Voice Enhanced to emphasize voice or dialogue, recommended when watching movies, especially at low volume and for individuals who may be slightly hearing-impaired (not a substitute for hearing aid).30mm Diameter Driver Units are larger than many portable headphones for deeper bass, lower distortion and wider dynamic range; low frequency response extends down to 12Hz. PET Diaphragms ensure high rigidity for minimum distortion, and low mass for excellent high-frequency response. Neodymium Magnets pack more magnetic energy per ounce than conventional ferrite, samarium cobalt or aluminum magnets and produce powerful bass and clear treble sound. Automatic Power On/Off for both headphones and transmitter conserves battery life; transmitter turns on when it senses an input signal; headphones turn on when you place them on your head. Comfortable Closed Circumaural Design with cloth covered ear pads offers added comfort for extended listening sessions. Automatic Headphone Battery Charge System with built-in Nickel Metal Hydride (Ni-MH) battery charges when headphones are set onto the transmitter.