Professional-quality hearing protection (21dB 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 inform you when to change batteries
EAN: 4054596123120
Manufacturer: 3M
Brand: 3M
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