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Headphones

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Sony MDR-RF840RK

Specifications

Item Value
Impedence 28Ω [x]
Magnet Ferrite [x]

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  • General Data

      • Magnet

        Ferrite

      • Diaphragm

        PET

      • Weight (g)

        300.0

      • Battery life - rechargeable battery (h)

        18.0

      • Battery number

        2.0

      • Battery type - normal

        AAA

      • Closed Type

        YES

      • Mute function

        Volume level decreases when RF signal is weak or not received

      • Recharging time - from 0 to full (h)

        16.0

      • Battery type - rechargeable

        Ni-MH

      • Battery life - normal (h)

        28.0

      • Open Air Type

        NO

      • Power ON indicator

        YES

      • Volume control

        YES

      • Frequency response (Hz)

        20 - 20,000

      • Wearing style

        Over band

      • ON/OFF function

        Power turns ON automatically when headphones are worn

      • Dynamic Type

        YES

      • Driver unit (mm)

        40.0

  • Transmitter

      • Weight (g)

        220.0

      • Available channels

        3.0

      • Signal range (m)

        100.0

      • Battery charge method

        Automatic

      • Stereo mini jack input

        YES

      • Transmitter power ON/OFF

        Signal transmission starts when audio signal is detected

      • Power ON indicator

        YES

      • RCA jack input

        YES

      • Charging stand type

        Standing

      • Battery charge indication

        YES

      • Distortion rate (% at 1 kHz)

      • Transmission type

        RF

      • Transmitter frequency range (Hz)

        30-12,000

  • Supplied accessories

      • Connecting cords

        YES

      • Plug adaptor

        YES

      • AC adaptor

        YES

      • Rechargeable battery

        YES

  • Dimensions

      • Heigth (mm)

        245.0

      • Width (mm)

        112.0

      • Depth (mm)

        310.0

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