Sony MDRRF4000K Headphones with 40mm Drivers, Wireless

Sony MDR-RF4000K Headphones with 40mm Drivers, Wireless 2.4GHz Digital RF Signal, Multi Function Storage Case / Charging Dock

SKU: SOMDRRF4000K
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Sony MDRRF4000K Headphones with 40mm Drivers, Wireless Specifications

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About Sony MDRRF4000K Headphones with 40mm Drivers, Wireless

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.

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What's in the box:

  • Sony MDR-RF4000K Headphones
  • 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)
  • Sony 90 Days Limited Warranty