Code Red Battle Zero Mod Waterproof Tactical Bone Conduction Headset . Be the envy of everyone when you gear up with our lightweight bone conduction headset with military style PTT. Bone conduction technology transmits and receives audio directly from vocal vibrations in the skull. The speakers do not block your ears thereby improving situational awareness. Wear hearing protection (Foam Plugs) at the same time to improve performance in high noise environments. Package Contents: Code Red Battle Zero Mod Waterproof Tactical Bone Conduction Headset