analog hearing aid V-99
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Detailed Product Description
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Max Sound Output: 129dB ± 4dB Max Sound Gain: 55dB ± 5dB Total Harmonic Distortion: ≤5% Frequency Range: 450~3500 hz Equiv Input Noise: ≤30 dB Working Voltage D. C. 1.5V Working Current: ≤4 mA Measurement: 6.6*4.3*1.6cm *Main Unit Size 6.1*4.1*1.6 cm,NW:46g *Use 7# Battery
*High
quality, Aluminium Alloy cover,super powerful,8 levers *Without grating sound *N-H Switch *On/Off switch *Volume Control |
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