HD Hearing Enhancement and Protection. 20% smaller than the original game ear. Features four digital sound processing channels; 20 bit audio processor; 8 band graphic equalizer; automatic feedback control; sound activated compression; toggle volume control; and low battery tone indicator. Includes comfortable foam tips for hearing protection from sudden or sustained loud noises. NRR (Noise Reduction Rating: 29dB). 40dB power. May be worn in either ear. Includes carrying pouch, 4 pack batteries and instruction manual. Hang packaged.