A Great Value in electronic hearing protection for the shooting sport enthusiast. 3M PELTOR is a leading brand in electronic level-dependant hearing protection for professionals who have an occupational exposure to gun shot or impulse noise. The ProTac Shooter Headset is designed to help protect your hearing while allowing you to hear important auditory clues from your surrounding, such as range commands, approaching game animals, or simply talking to your shooting buddies. Professional-Quality Hearing Protection (26dB NRR) Environmental microphones for level-dependent hearing protection and ambient listening 3.5 mm listen only stereo input for connection to external devices (e.g. cell phone, two-way radio, Ipod) Voice guided menu system for ease of use and adjusting settings Auto power off, the headset will turn off after 4 hrs of non-use to save battery Low-battery warning to infrom you when to change batteries To reduce the corrosion caused by sweat and moisture, the electronics are