NRR 23db electronic hearing protection and 2-way communications headset. Automatically cuts off harmful noises above 82dB while amplifying quiet sounds by up to 18dB for increased situational awareness. NATO-US wired U174 downlead. Silicon gel ear cushions. Powered by 2x AA batteries (not included), 270 hour battery life. BIFROST GEAR – BY VETERANS – FOR PATRIOTS – NORTH CAROLINA, USA.