Connection Type
    Connection Type
    Pin
    Bluetooth
    4-pin USB Type A (Male)
    Sound Output
    Sound Output
    Dual
    Single
    Noise Reduction Rating
    Noise Reduction Rating
    16 dB
    19 dB
    20 dB
    24 dB
    26 dB
    29 dB
    30 dB
    Not Rated
    Color
    Color
    Black
    Gray
    Yellow
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    Cord Length
    Cord Length
    2 1/2 ft.
    3 ft.
    4 ft.
    3-4.5ft.
    Battery Type
    Battery Type
    Disposable
    Rechargeable
    Ear Cup Color
    Ear Cup Color
    Black
    Yellow
    Battery Life
    Battery Life
    8 hrs.
    24 hrs.
    45 hrs.
    Headband Material
    Headband Material
    Plastic
    Metal
    Maximum Volume
    Maximum Volume
    82 dB
    94 dB
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    RoHS Compliant with
    Exemptions
    Batteries Included
    Batteries Included
    Yes
    No
    Battery Chemistry
    Battery Chemistry
    Alkaline
    Lithium Ion (Li-Ion)
    Power Source
    Power Source
    Battery
    Voice
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
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