- Electronic earmuff amplifies low level sounds while compressing noises that exceed safe levels
- 3.5mm stereo input jack and patch cable (included) enable playback from smartphone or digital audio player
- Four microphones
- LED ON/OFF indicator light prevents unintentional battery discharge
- Premium adjustable headband
- Compact folding feature
Radians R-3400 Quad Microphone 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. 3.5mm stereo input jack and patch cable works with most smart devices.