M-1/DC Noise Canceling Amplified Dynamic Microphone Noise Shielded Microphone (Muff) with Momentary PTT (Push-to-Talk) switch, hangs freely ready for periodic use. Soft Headpad and Ear Seals guarantee exceptional comfort. 25 foot straight cord with (PJ-051) Plug to mate with Series C31-XX Extension Cords Corrosion-proof, chrome plated Headset/Stirrup Assembly Certified Noise Reduction Rating of 26db