Sync™ Electo H : Sync Electo Helmet Earmuff Sound Amplification Earmuff With Fm Radio and Audio Input Jack

Combines the FM Radio earmuff with advanced sound amplification technology • Allows wearers to hear important communications at a safely amplified level, while listening to the radio • Amplifies incoming sounds to 82dB, then acts as a passive earmuff for sounds above 85dB • Requires 2AA batteries