It is caused by amplified sound from the hearing aid getting back to the micropphone and being re-amplified. Ways to avoid Whistling /noise Once the hearing aid is properly seated in your ear,the whistling will generally stop.
eBay
2025 Outdoor Smart Rechargeable Hearing Aid Mini Adjustable Tone Sound Amplifier Portable Deaf Elderly Hearing Aids
Aliexpress UK
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).
eBay
6 PCS Ear Care Black Mini Cleaning Brush With Wax Loop and Magnet for Hearing Aids and Earphones Cleaning Tool Amplifier Brushes
Aliexpress UK
With the latest Bluetooth version, you get a greater range at faster speeds using lower power. Digital Signal Processing creates a safe experience that suppresses noise without blocking the speech signal.
eBay
2024 New Oticon Jet 2 BTE PP hearing aid 48Channel Programmable Digital hearing aids Mobile Phone Remote Adjust Hearing Care Aid
Aliexpress UK
Type: Hearing Aids. 1 x Hearing Aids. When the battery is exhausted and the hearing aid cannot work normally, you need to buy a special A10 battery for the hearing aid. 2 x Hearing Aids. instead of the ordinary A10 battery.
eBay
Rechargeable Elderly Hearing Aid 5 Levels Sound Adjustment Wireless Sound Amplifier The Listening Device Invisible Hearing Aids
Aliexpress UK
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.
eBay
Rechargeable Digital BTE Hearing Aid Adjustable Volume Deaf Mini Sound Amplifier Portable Elderly Hearing Amplifier
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+.
eBay
hearing aid rechargeable RIC Hearing Aid for Middle-Aged And Elderly High Volume Behind-the-Ear Hearing Device
Aliexpress UK
Mini size, Bluetooth headset appearance, different from the old hearing AIDS, no abnormality will be noticed after wearing. It is also a Bluetooth headset. The hearing aid mode can be used in two ways.
eBay
Bluetooth Bone Conduction Hearing Aid Noise Reduction Waterproof Noise-cancelling Voice Amplifier Wireless Headset
Aliexpress UK
We are confident in the quality of our Bluetooth hearing amplifier earbuds. With the latest Bluetooth version, you get a greater range at faster speeds using lower power. Digital Signal Processing creates a safe experience that suppresses noise without blocking the speech signal.
eBay
Bone Conduction Voice Amplifier Noise Cancelling Hearing Aids for Deafness Bluetooth Music & Phone Answering Wireless Headset
Aliexpress UK