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How to reduce feedback/whistling for this hearing amplifier?
1. Adjust hearing aid wearing angle to ensure no air circulation then howling sound will not be produced and then turn it on.(That the microphone face up)
2. Ensure the earplugs suitable.If it is too loose, replace with a big one.
Note:This is normal for the hearing aid to howl when air in just like that when singing in a KTV, the microphone makes a harsh call
If you have any question, please tell us.We will serve you wholeheartedly within 24 hours
Specifications
Maximum Output: ≤115dBSPL
Average Output: 106±4dBSPL
Peak Gain : 38±5dB
Average Gain : 33±5dB
Frequency Range: 500Hz~4000Hz
Total Harmonic Distortion（THD）500Hz ：0.9%
Total Harmonic Distortion（THD）800Hz ：0.6%
Total Harmonic Distortion（THD）1600Hz ：0.4%
Equivalent Input Noise ≤12dB
Operating Power Supply ≤1.1mA
Rated Working Voltage of Hearing Aid: 3.7V
Package List
2 × Hearing Amplifiers
1 × Charging Case
1 × Instruction manual
1 × Operation Guide
1 × Cleaning Brush
1 × USB Cable
8 × Silicone Ear Domes
Package Dimensions : 4.02 x 3.98 x 1.54 inches; 4.97 Ounces
Date First Available : September 23, 2021
Manufacturer : TooPower
ASIN : B09GYC6H1R
【AGCO Function 】Hearing aids for seniors use the latest 8-channel digital noise reduction chip, which differentially amplifies the bass, midrange, and treble of different frequency bands.Double noise reduction, and improvement of sound source localization ability. The voice is not distorted, which can better adapt to hearing loss.
【Easy to Use 】One-button operation, put the seniors hearing aids in a comfortable position of the ears, press and hold for more than 5 seconds to turn on and off the machine. After booting up, Click on the volume control button to adjust 5 volume levels, press and hold for 2 seconds to volume control button to adjust 3 Modes.When the hearing aid is put back into the charging case, it will automatically shut down, saving your battery life.
【Smart Fast Charging 】This pair of stylish and comfortable rechargeable hearing aid ,Using smart charging chip.Advanced fast charging technology can be fully charged in 2 hours,45 hours working duration.Hearing aids and charging box have dual power reserves, with a super battery life of 140 hours.It is easy to carry and can be put into a pocket.
【Smart Touch Control & 3 Modes】The hearing aid is controlled by a smart touch screen.With a press and hold for 2 seconds of surface,You can adjust different modes （Normal listening mode，noise environment mode，thinnitus masking mode） and volume （5 volume levels） according to the external environment.
【One Year Warranty】Your shopping experience is our top concern.Provide 30 Days money-back, 1 year manufacturer warranty and unlimited customer service. If you have any questions about using our products, please contact our technical support team and we will be happy to help you.
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