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.
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3-10pcs 3.7v 45mah 541112 small lithium polymer battery for earphones hearing aid sensor light bluetooth earphones
Aliexpress UK
【User-Friendly Design】 The hearing aids for seniors feature a simple, intuitive interface, ensuring ease of use. 【Advanced Noise Reduction】 The OTC Hearing Aids state-of-the-art automatic noise reduction feature ensures you hear only what matters.
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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.
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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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Features: -USB Rechargeable, no need to replace the battery, environmental-friendly, with a long standby time. -Built-in intelligent chip, clear and noise-canceling, no worry about the noisy environment. -Strong shell, anti falling and durable, it still can be used normally even if it fell from two meters high. -360° adjustable, suitable for left or right ear to wear. -Ergonomic design, soft and flexible, can help you a lot in daily life. .
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Lightweight design In ear sound amplifier is small, hide it to the maximum extent possible in the ear canal. Ideal for most mild to moderate sound amplification. They capture missed sounds with maximum clarity, providing you with a clear and natural sound.
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Hearing aid mode can be used by two; Bluetooth mode only supports monaural mode, two does not support pairing;. This product is single, need binaural hearing aid, buy two;. ▸ Music Mode: Hold 3s to connect devices (single-ear use only).
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