Radians R-3700 Bluetooth Quad Mic is an electronic sound amplification earmuff featuring Bluetooth® wireless technology. 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. Works wirelessly with most smart devices!

Features: 

• Electronic compression to protect hearing
• Amplifies environmental sounds for enhanced hearing
• Four microphones
• Bluetooth connectivity compatible with most smart devices
• LED On / Off indicator light
• Adjustable headband folds for compact storage
• 3.5mm stereo input jack and patch cable (included) enable playback from smartphone or digital audio player
• NRR 24 dB
• (2) two AAA batteries required