Built-in directional microphones amplify range commands and other ambient sounds up to 4X to a safe 82dB, providing more natural listening and enhanced communication. Actively listens and automatically shuts off amplification when ambient sound reaches 82 dB. Features low profile earcups for firearm stock clearance; adjustable headband for secure fit; compact folding design for convenient storage; tactical black color. Includes AUX input and 3.5mm connection cord for MP3 players and scanners; Includes 2 AAA batteries; automatic shut-oft feature after 4 hours increases battery life. Comes with hard carrying case that includes 2 additional ear cushions, cloth bag, and storage slots for earmuff, auxiliary cable and batteries. Size: One Size Fits Most.