Motorola MHP61 Hearing Protection Headset: * Push-to-talk microphone cable connects to headset * Push-to-talk microphone is located on the cable * Noise reduction rating of 21 dB * 3.5mm plug * 1 isolation earmuff * 1 assembly cable with push-to-talk microphone for Motorola Talkabout 2-Way Radios * Includes assembly cable for audio devices