Motorola RMN4056 Receive- Only Headset
Model Number:  RMN4056
For high-noise environments where users must hear information clearly but seldom need to transmit, they need the headset that delivers reliably. This headset features easily replaceable earseals filled with a liquid and foam combination that comfortably provides protection from external noise. Use with 3.5mm threaded jack. Plug directly into your radio with the BDN6676 3.5mm Jack Adapter with Quick Disconnect Latch.
Noise reduction rating
Intrinsic safety standard