Abstract: A hearing protection device is presented. The hearing protection device includes a first hearing protection unit and a second hearing protection unit. Each of the first and second hearing protection units include a microphone that receives ambient sound, a processor that provides level dependent attenuation of the ambient sound, and a speaker that broadcasts the sound into a user's ear. The hearing protection device also includes a first communication unit, which broadcasts a digital push-to-talk signal over a first communication protocol. The first communication protocol is a low energy communication protocol. The hearing protection device also includes a second communication unit, which broadcasts a digital communication signal over a second communication protocol.