3M Peltor ComTac V Hearing Defender, No DL, Electronic Earmuffs Model#: MT20H682FB-09-SV. Battery Life: 150 Hours. Features: Compatible with Most Helmets, Dynamic Differential Microphone, Level Dependent Function, Noise Cancelling Microphone, Two-way Communication. Plug Type: NEXUS® TP-120. Product Series: SwatTac V. Product Type: MIL/LE Tactical Headset. Visit the store for more!