1.For Brazil friend, 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. Thank you. 2.Russian Friend : Please fill in receiver\'s full name in the order due to new policy of Russian customs, otherwise you probably won\'t receive package finally .
1.Manual control dual-core low power consumption digital hearing aids
2.Intelligent full-frequency noise reduction
3.4 Channels with Fully Automatic Wide Dynamic Range Compression (WDRC).
5.Feedback cancellation system
6.Ear adaptive output control
7.4 Kind of hearing programs:
A)Normal microphone frequency response "N"
B)Microphone low frequency attenuation"L"
C)Microphone high frequency attenuation"H"
D)Audio + inductive input 8.Direct Audio Input
9.Automatic program memory function
10.Low Voltage Prompt
12.Program switching Beep MAX SSPL90:131 dBSPL HFA-SSPL90:125 dBSPL
MAX GAIN: 67dB
Frequency Range: 200~5969HZ
Harmonic distortion: 500Hz:1.9%
1600Hz:0.3% Equivalent Input Noise: 22.1 dB
Compression rise time: 4 ms
Compression Recovery Time: 39 ms 1x hearing aid 1x A13 battery( battery will not come to you,as it can not ship by DHL)
3x Earplug 1x Instruction manual (English) 1.Availabe 2.Delivery within 3 days 2 years