Specifications:

High quality BTE hearing aid with USA speaker:

Max Sound Output: 129dB ± 4dB

Max Sound Gain: 45dB ± 5dB

Harmonic Wave Distortion: ≤5%

Frequency Range: 450~3500 hz

Input Noise:  ≤30dB

Battery: A675  Zinc Air Battery                      

Working Voltage: dc1.5V                     

Working Current: ≤3mA     

Color: As the picture shows

Item Size: 5.0 x 3.8 x 1.0 cm                      

Package Size: 9.0 x 7.5 x 3.2cm                         

Net Weight: 8g                           

Package included:

1 x F-998 Hearing aid

4 x Earplug (different sizes)

2 x A675 Zinc Air Battery

1 x User manual

1 x Box

Note:

Adjust volume to the minimum before wearing.

Choose an earplug of slightly bigger size to avoid whistler.

Increase volume gradually to avoid sudden increase in sound.

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.

Keep the ear plug clean

Remove the battery if you don't use it for long time.