Cheap Audifonos Para Sordos Powerful Headphones Mini BTE Hearing Aids For Severe Profound Deaf Loss Same Siemens S-139

Note:1.For Australian users, your hearing aid will not be equipped with batteries due to your national policy

Products technical parameter

Maximum saturated sound pressure level (dB): ≤ 130dB + 4dB

Max Gain: 48+5dB

Equivalent input noise: ≤32dB

Total harmonic distortion: ≤ 5%

Frequency response range: 450Hz ~ 3500Hz

Rated power supply current: ≤3mA

Package Including

1* Deaf-aid earphone

1* Zinc air hearing aid battery A675

3* silicone different size ear plugs (small, medium, big)

1* cleaning wax brush

1* green gift box

1* English manual

1* FEIE warranty card

2.The battery installation: Gently open the battery compartment cover, put a battery into the battery compartment in the right direction, then close the battery compartment .

3.Before you use this item ,you have to turn the ON-OFF switch to Off,and turn the sound volume to minimum

4.Then put this item on you ear, keep it tightly

5.Next, turn this item ON, adjust the volume until you hear clear sound

– 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.

– Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids.

– Use for long periods of time, please remove the batteries to prevent battery rot erosion hearing aid components.