Motorola AARMN4020B Heavy Duty Headset with Boom Microphone

Motorola AARMN4020B heavy duty headset comes in Push-to-Talk (PTT) or voice-activated (VOX) versions and includes a noise-cancelling boom microphone. It can be worn with or without a hardhat. On Push-to-Talk models, the switch is located on the earcup. On voice-activated models, the VOX module is contained within the headset. VOX operates on the conventional channel only.