Rechargeable Hearing Aids OTC Bte Sound Amplifier

130nm digital signal processing chip4-channel automatic volume control (WDRC) Hyper cardioid pickup pattern microphoneDouble microphonesMiddle-power output with low distortionAdaptive feedback cancellationLayered Noise ReductionAutomatically saving volume & ModeMultiple functions with one button3 program modes(P1 Quiet Environment Mode, P2 Noise Reduction Mode, P3 Advanced Noise Reduction Mode)Mode switch prompt toneVolume change prompt toneLow battery warning indicatorBooting delay prompt toneMagnetic catch chargingBooting Automatically out of the box,Power off in the box/* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1