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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.2.Brazilian customer: Please offer us your value added tax number (CPF number) in the order message, the CPF number needs to be provided to courier before shipping. 3. The hearing aid can be programmable according to your audiogram, if you have please send it to usFEIE digital hearing aid S-15A 4 channels elderly Amplifier Sound Enhancer with battery 10 Free Shipping FEIE digital hearing aid S-15A 4 channels elderly Amplifier Sound Enhancer with battery 10 Free ShippingFEIE Medical digital hearing aids S-15A with 4 channels Free ShippingFeatures:Telecom-easy,can answer the phone without signal signal interferenceWDRC Signal Processing4 Channels8 BandsAdaptive Noise Reduction (ANR) 12dBAdaptive Feedback Cancellation (AFC)FrontWave Directional Microphone12KHz Bandwidth3MemoriesAdjustable IndicatorSuper QuietAdjustable for high &