Product Details
Sony 2.4GHz Digital RF Black Wireless Headphone - MDRRF4000K
Serious sound, no wires. These high-fidelity headphones deliver deep bass, a wide sound range and a cushy fit.
Unplug and enjoy. The MDR-RF4000K digital wireless headphones system gives you the freedom to travel up to 100 feet from your sound source while delivering phenomenal sound. This system includes Ni-MH rechargeable batteries, 2.4GHz RF digital transmission and headphones with a 40mm driver for deep bass. Includes charger and ultra-long battery life.
Features:
- 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. - 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. - 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.
Specifications:
General
- Input Jack: Phono jacks (left/right) Stereo mini jack
- RF Carrier Frequencies: 2.404 GHz - 2.476 GHz
- RF Modulation: GFSK
- Range: Approximately 100 feet (30 m)
Audio
- Distortion: 1% or less (1 kHz)
- Driver Unit: 40 mm, closed
- Frequency Response: 10 Hz - 22,000 Hz
- Infrared Carrier Frequencies: 2.404 GHz - 2.476 GHz
Power
- Battery Charging (Approx): 15 hours
- Battery Life (Approx): 8 hours
- Battery Type: AAA Ni-MH x 2
- Input Voltage: DC 5.2 V (from supplied AC power adaptor)
- Power Requirements: Rechargeable nickel-metal hydride battery (supplied) or commercially available (size AAA) alkaline batteries
What's In The Box:
- AC power adaptor (5.2 V) (1)
- Connecting cable (stereo mini plug - pin plug × 2), 1 m (39 3/8 in) (1)
- Card warranty (1)
- Rechargeable nickel-metal hydride battery
- Unimatch plug adaptor (stereo mini jack - stereo phone plug) (1)
- Operating Instructions (this manual) (1)
- BP-HP550-11 (550 mAh) (1)
- Stand (1)
Approximate Shipping Dimensions:
- Height: 14.88"
- Width: 4.25"
- Depth: 11.25"
Approximate Weight:
Warranty Information:
- Manufacturers Warranty (authorized online retailer): 90 days labor, 1 year parts
Footnotes:
- Actual battery life will vary based on product settings, usage patterns, battery and environmental conditions.
