Radians R-3400 Quad Mic is an electronic sound amplification earmuff. Four independent microphones provide a full surround sound experience that amplifies low sound level noises while compressing sounds that exceed safe levels. Compact folding feature for easy storage. 3.5 mm stereo input jack and patch cable works with most smart devices. Two AAA batteries required.
Specifications:

Type
Color	OD Green/Black
NRR	24 dB
Quantity	1 Pair
Style	Over the Head
AFT Circuit
Battery	AAA
Compression Circuit
Material