Maximum saturation pressure (± 4dB): 130
The gain: (46 ± 5dB)
Frequency range: (Hz): 100-5500
The equivalent input noise: (± dB)≤ 28
Harmonic distortion rate (%):≤ 4
Continuous working time: (H)≥ 10
Battery capacity: 40MA battery is a rechargeable battery
1 x Hearing Aid
1 x Power Adapter
1 x Charging Station
5 x Ear Plug
1 x English User Manual
1.Adjust volume to the minimum before wearing.
2.Choose an earplug of slightly bigger size to avoid whistler.
3.Increase volume gradually to avoid sudden increase in sound.
4.If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
5.Keep the ear plug clean.
- ❤High quality hearing aid sound amplifier
- ❤Light weight, easy and comfortable to wear.
- ❤The hearing aid come with rechargeable function, no need to change battery
- ❤Silicone earplugs in 5 different sizes, fit most ears.
- ❤Anti-shock, anti-drop, moisture proof, high temperature proof.