NRR23dB noise reduction rating. HD speakers. Omni directional microphones. Low noise/frequency tuned for natural sound clarity. Full dynamic range HD speakers for clear, balanced sound. Sound activated compression--0.02 second reaction time. Sound dampening composite housing. Audio input jack. Black Kryptek pattern. Ultra compact and collapsible. Slim profile rubberized cups. Requires 2 AA batteries (included). Color: Black. Clam packed.
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