Sony MDR RF-4000K Wireless Heaphones

MDR RF-4000K

Differences in details 40mm drivers deliver deeper bass, lower distortion and wider dynamic range. Battery life for extended viewing The supplied rechargeable NiMH battery lets you enjoy up to eight hours of continuous on a single charge1. The slim, folding design fits snugly into the charger (included). Substituting a single AAA battery for the rechargeable NiMH pack provides 10 hours of power. Listen from a distance Radio Frequency (RF) transmission sends signals from the transmitter to the headphones, allowing high fidelity sound reproduction. You can enjoy the accompanying reception range ??? up to 100 feet ??? even when you move outside the line of sight of the transmission. Stay comfortable as long as you listen A wide, self-adjusting headband distributes the headphone's weight over a wide area, reducing pressure and improving comfort.Footnotes: 1. Actual battery life may vary based on product settings, usage patterns and environmental conditions.

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