We give 4 different sizes of earplugs to reduce howling and noise. - Suitable for mild to moderate hearing loss (Reference hearing loss map). Built-in battery: Heading Aids - YES; Dock Case - NO. Saves your trouble to buy button batteries frequently.
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The cause of howling/noise: To make a small size hearing aid, the internal amplifier and the microphone are close to each other. The sound is continuously received and extended, so it has a certain possibility of producing howling after power-on.
eBay
It is fit for either the left ear or the right ear. 1x Hearing Aids. - Maximum Gain (dB): 35dB, suitable for mild to moderate hearing loss. We give 4 different sizes of earplugs to reduce howling and noise.
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This Powertone F-138 In-Ear Hearing Aid is a quality hearing aid which can help you hear the sound clearly and loudly. - Silicone ear pads in 3 different sizes, suitable for any form of ear. - If you hear a howling,check the ear (silicagel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
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2 x Hearing Aids. It takes about 2 hours to finish charging and you can use it for about 20 hours. 【EASY TO USE】-Blue device for left ear, red device for right ear, white charging case. Obvious On/Off button for easy operation.
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1 x Behind-the-Ear hearing aid (single). They are also easy to clean, making them more convenient and hygienic. This will help your product to be received safely and quickly! Style: Behind-the-Ear (BTE).
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Features: Easy Volume Adjustment: Volume can be smoothly controlled by simple screw rotation for personalized sound. Long-Lasting Rechargeable Battery: Energy-saving built-in 300mAh battery supports extended usage and reduces charging frequency. Fast Charging & Extended Standby: Fully charges in 1.5 hours and offers up to 20 hours of continuous use. Lightweight and Comfortable Fit: Each device weighs only 3 grams, designed for comfortable and discreet wear with multiple earplug sizes. Compact and Portable Design: Small charging case ensures easy carrying and invisible wearing anytime, anywhere. .
eBay
The cause of howling/noise: To make a small size hearing aid, the internal amplifier and the microphone are close to each other. The sound is continuously received and extended, so it has a certain possibility of producing howling after power-on.
eBay