Motorola RMN4057 3M Peltor HT Series Headset With 3.5MM Threaded Jack
Model Number:  RMN4057
With its carefully designed speaker system and excellent attenuation, the 3M™ Peltor™ HT™ Series listen-only communications headset helps provide clear sound reproduction and communication in high-noise environments.
This versatile hard hat mount headset features earcups with liquid and foam-filled comfort cushions for long wear and optimum seal; adjustable, noise-canceling microphone; and flexible, insulated connection cords made from durable polyurethane.
Comfortable and durable, this headset allows for long-term use under tough conditions and has a NRR of 23dB.
* Requires NNTN8383 Remote Speaker Microphone.
*The NRR may overestimate the hearing protection provided during typical use.