3M™ PELTOR™ ProTac III MT13H221A, Headset, Black, Headband, 10 Each/Case

Features

• "Professional-quality hearing protection with a 21dB NRR Environmental microphones for level-dependent hearing protection and ambient listening 3.5 mm listen-only stereo input (limited to 82 dB) for connection to external devices Voice-guided menu system to prevent you from taking the headset off Auto power off after 4 hrs of non-use to save battery Low-battery warning for prompt battery changeover To reduce corrosion caused by sweat and moisture, the electronics are located in a separate compartment of the cup"