Product Description
The specification of Hearing aids(WK-618) as follows;
1.Max Sound output: 129±5dB
2.Max Sound Gain:≥50dB
3.Harmonic Wave Distortion:≤5‰
4.Frenquency Range: 450~3500Hz
5.Input Noise:≤30dB
6.Battery: AG13 OR A 675 button battery
7.Working Voltage: D.C.1.5v
8.Working Current:≤4mA
9.Measurement: 5.3*4.4*1.0cm
10.Net weight:9g (Without Battery)
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