a 50 DB of Power a Noise Reduction - NRR 9db that legacy of innovation continues with the introduction of the Walker's Game Ear Elite Series. Operating on entirely new platform that is 20 percent smaller than the original Game Ear, the Elite Series offers 4 channel/20 bit audio processing for unparalleled sound quality plus faster sound activated compression and automatic feedback control. a NRR- Noise Reduction rating of 29 DB a 50DB of power a AFT:?Adjustable Frequency Tuning, provides base/treble fine tuning capability a One environmental adaptive listing mode a Toggle volume control a Four digital sound processing channels a 20 bit audio processor for crisp clear sound a 8 band graphic equalizer a Automatic Feedback control a Fast acting sound activated compression a Low battery tone indicator a Power source #13 battery