The 3M™ Peltor™ LiteCom Pro II is a communication headset with high attenuation hearing protection and short range built-in communication radio. The communication radio is designed for either stand alone or integration into industrial or other professional communication systems. The 3M™ Peltor™ LiteCom Pro II Li-Ion Intrinsically Safe Battery is a replacement battery intended for 3M™ Peltor™ LiteCom Pro II Headsets (sold separately).Helps to achieve clear communication