Normally about $65 sold at places like OpticsPlanet: https://www.opticsplanet.com/tac-shield ... muffs.html
TAC SHIELD Compact Elite Ear Muffs are the next step in hearing protection. The internal electronics allow the shooter to hear his or her surroundings without having to remove their protection. Once the shooting starts, the sound enhancement system shuts off. The Compact Elite Ear Muffs offer individually adjustable volume control. 25 dB Reduction.
Features:
* Individually adjustable sound
* Improves sound for normal talking
* Auto shutoff at 85db, when shooting begins
* Collapsible and adjustable padded headband
