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).
eBay
Clear voice amplification for better hearing.
eBay
Choose slightly larger earplugs to avoid whistling. ✔️ Ideal for moderate to severe hearing loss. Provides powerful amplification for those with severe hearing loss. 1/x Hearing Aid. ✔️ Noise reduction and wind blocking.
eBay
When you put on a hearing aid, you will be able to hear conversations, music and TV shows. Hearing aids are small and lightweight, making you comfortable. - [Two Independent Listening Modes] H: high-frequency mode, suitable for noisy situations.
eBay
Features: -Suitable for people with mild to moderate hearing loss. -Built-in rechargeable battery, no need to replace the battery, it can be used continuously for up to 12-18 hours after being fully charged. -It's easy to use with just two buttons, a scroll wheel for volume adjustment, and a slider for power on/off. -Suitable for many occasions, whether outdoor or indoor activities, it is very suitable for long-term wear. -The package includes 12 ear tips and a cleaning brush. Specifications: Material: silicone+ABS+metal Color: black Sound gain: 30±5dB Frequency range: 450-4500Hz Signal-to-noise ratio: ≤32dB Earphone size: 0.47*1.7 inches .
eBay
ACCESSORIES INCLUDED: Each 4 different size of earplugs to help adjust to your ear canal for a comfortable fit. Each hearing amplifier included an extra button battery. 2x Hearing aids. It can be comfortably worn in either ear.
eBay
eBay
A whistle (shrill sound) is a sign of wearing hearing aids incorrectly. If the hearing aid and ear canal do not match, the sound from the receiver will be picked up by the microphone again, forming a loop that will be continuously amplified and produce a whistling sound.
eBay