New Smart Touch Control Hearing Aids Rechargeable Ear Invisible Hearing Aid Amplifier For Seniors Hearing Loss
Product parameters
1.Max sound out put: 136dB±3dB
2.Sound gain:≥25±5dB
3.Total harmonic wave distortion: ≤ 10%
4.Frequency range: 400HZ-3500HZ
5.Input Noise:≤ 32dB
6.Battery capacity: 20 mA
7.Charging box battery capacity：300mA
Features 1. Stable class D circuit 2. Wheel volume control 3. N/H for program switch 4. Earhook and thin tube optional 5. Decent casing design 6. On/ off with battery door 7. 600 hours of battrey life 8. Size A675 battery
Details
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