TACK-1 Headset is a progressive, lightweight and non-obstructive head-worn communication headset for various applications. Its design allows it to be worn in conjunction with an array of tactical helmets, bicycle helmets, or practically any hat, balaclava or cap. The noise-canceling/waterproof microphone provides exceptional transmit audio (with or without a gas mask). TACK-1 headsets include a comfortable pivoting speaker with comfort pad.