SPECIFICATIONS

Brand Name: K&FCOPTEE

Hign-concerned Chemical: None

Model Number: ZF-M909Brown

Origin: China Mainland

Tips for buyers:

The cause of howling/noise: The internal amplifier and the microphone are close to each other in the hearing aid, and the sound is continuously received and expanded, so it has a certain possibility of producing howling after power-on. At present, small hearing aids and high-power hearing aids on the market can hardly avoid howling.

Ways to avoid howling/noise:

1. When the power is high (the amplified sound is large), howling is more likely to occur. Therefore, gradually increasing the volume from low can effectively avoid howling.

2. When the ear canal is completely sealed, there is no howling sound. Therefore, please use hearing aids after cleaning your ear canal, and test the earplugs from large to small to find the most suitable earplugs.

3. After the hearing aid enters the ear canal, it is recommended to push the hearing aid with your fingers hold it for 1-2 seconds, and then release it to fully extend the earplug.

Kindly Remind

1. Adjust volume to the minimum before wearing.

2. Choose an earplug of a slightly bigger size to avoid a whistler.

3. Increase volume gradually to avoid a sudden increase in sound.

4. If you hear a howling, check whether the ear (silica gel) is appropriate and whether the size of the plug is tight,

the appropriate choice of earplugs and plug, and ensure no air leakage.

5. Keep the ear plug clean.

6 . Turn off the hearing aid6 . Turn off the hearing aid if you don't use it.

Package includes

2 x Hearing aids (pair)

6 x earplugs (3 different sizes)

1 x user manual

1 x White charging case

1 x type-c charging cable

1 x Cleaning brush