Radians 230-EHP is a low-profile electronic sound amplification earmuff. Dual independent microphones pick up and amplify low sound level noises electronic circuitry protects from dangerous impulse noises of the shooting sports. - Slim Cup for Gun Stock Clearance - Cuts Sounds over 85 dB - Dual Microphones - Single On/Off Amplification Knob - Compact Folding Headband