Why is there a whistling during the wearing process?. We give 3 different sizes of earplugs to reduce howling and noise. Suitable for mild to moderate severe hearing loss (Reference hearing loss map).
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5Pcs 401215 3.7V 90mAh Polymer Lithium Rechargeable Battery FOR 3D Glasses MP3 Toy Watch Selfie Stick Hearing Aid Reading Pen
Aliexpress UK
Features:-It adopts a lightweight in-ear design and comes with earplugs of different sizes to ensure a tight fit, comfortable wearing and reduced howling.-The left ear is blue and the right ear is red, making it easy to tell which ear it applies to. With obvious on/off button for easy operation.-Hidden design, looks like a Bluetooth headset, so you won't feel uncomfortable.-Equipped with a 300mAh large-capacity charging box, it can be fully charged in about 30 minutes and can be used for about 6 hours. The charging box can provide 5 charges when fully charged.-Built-in intelligent digital chip, intelligent noise reduction, no fear of noisy environment, providing excellent sound quality.Specification:Maximum sound output: 118+/- 3dBSound gain: >= 35dB+.
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2 Hearing aids. fits perfectly behind the ears and even comfortable to wear with any pair of glasses. These are the simplest ready to use personal hearing amplifier devices. Using the bendable ear line to place, easy to adjust when you put it into the ear.
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Mode: hearing aid mode; Bluetooth headset mode. Two hearing aid modes can be used, Bluetooth mode only supports single ear mode, and two do not support pairing;. Function: auxiliary listening; bluetooth headset.
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It can greatly reduce noise, provide clear sound quality. we only sales hearing amplifier. Equivalent Input Noise Sound Level: ≤29dB+3. Frequency Response Range: 400Hz-4500Hz. Fine quality material, safe and non-toxic.
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We really appreciate that.
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2 Hearing aids. These are the simplest ready to use personal hearing amplifier devices. Using the bendable ear line to place, easy to adjust when you put it into the ear. fits perfectly behind the ears and even comfortable to wear with any pair of glasses.
eBay
eBay