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1.Russian customer: Please fill in receiver\'s full name in the order due to new policy of Russian customs, otherwise you probably won\'t receive package.wholesale medical supplies headphone pocket boby hearing aid S-6D free shipping Features: 1.Medium power suitable for moderate to severe hearing weak people.2.Stable quality,simple operation,easy to use3.Low distortion,low noise4.take phone file function, telephone pickup Technical Parameters:Max Out: 130dB ± 4dBMax Gain:56dB ± 5dBHarmonic Distortion:≤10%Frequency Range:300Hz~4000HzEquvi Input Noise:≤32dBStanard battery:AA batteries,No 5Voltage:D.C. 1.5VCurrent:≤6.5mA Specification:H--High sound clearT--Answer the phoneN--normal frequency0-9: Small-LoundON-turn onOFF-turn offProduct Weight:28gProduct Size:6.5*4.3*1.8cmPackage:Paper+Plastic BoxPackage Size:12*8.6*3.2cmCarton Quantity:120PCSCarton Size:52.5*31*39cmGW:12KgNW:10Kg Instructions:1.The w