External Both Sides Hearing Aids Sound Amplifier Lithium Battery USB Charging Ear Deaf

Features:

1.Max sound out put:130±5dB

2.Sound gain:≥45dB±5dB

3.Total harmonic wave distortion:≤5%

4.Frequency range:450~3500 Hz

5.Input Noise:≤30 dB

6.Voltage:d.c.1.4V

7.Current:≤1.5mA

8.Rechargable design.

9. Full recharge via 2.5 hours

10. Working about 60 hours

11. Battery Capacity 120mAh

List:

1 x Host

1 x Manual

1 x Dual headphone cable

8 x Earplugs

1 x USB cable

1 x Adapter