description:

F-139 Wireless BTE hearing aids， flesh-colored， plastic material， using precision micro devices， advanced surface mounting technology， maximum saturation sound pressure level: 129db ± 4db，

Full sound gain: ≥38db，

Harmonic distortion: f <when 1000HZ ≤15%，

Frequency response: not narrower than 450HZ ~ 3500HZ，

Equivalent input noise: ≤30db，

AG13 batteries with earmuffs * * 2 + 3 + English instructions

packing list:

2 x AG13 batteries

3 x earmuffs

1 x protective cover

1 x English Manual

1 x Hearing Aid