264-47102 by Protective Industrial Products

Cap Mounted Electronic Ear Muff with Active Listening - NRR 23
Active allows you to communicate with your colleagues, hear warning signals and other important information while protected from hazardous noise. The Level Dependent microphones provides perfect directional hearing and the Electronic Protection System limits all sounds to a safe sound level. Ergonomic design, replaceable headband and ear cushions contribute to high comfort and increased wear time. For optimal safety communication radios can be connected via the external sound input as well as MP3 players and other common devices.