* The product is an amplifier, which mainly helps the hearing impaired.

* Green Indicator light of charging function for A and B only

* Red Indicator light of Power for A, B and C

* AC Adaptor for A and B only

* 3 ear plug ( big, medium, small) are suited with different earholes separately

Specification:

1)      Power supply:Rechargeable batteries or ZINC batteries

2)      Operating current: ≤6mA±20%

3)      Speaker impedance: 200 Ohm

4)      Output power: 3 Mw

Unit weight: 20g (including built-in rechargeable battery)