With bluetooth function, you can listen to songs and make calls. 1 x Pair Of Hearing Aids. Noise Reduction. If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
eBay
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.
eBay
16-Channel Bluetooth Hearing Aids for Seniors with LED Power Display Charging Box, Automatic Switching Hearing Aids to Bluetooth for Phone/TV Without APP, Digital Hearing Amplifiers Without Whistling .
eBay
About this item 3-in-1 sound device: the traditional single mode is replaced by the innovative Bluetooth mode to enhance and optimize the user experience.Calling, listening to music and watching movies - anytime .
eBay
1 Pair Mini Invisible Hearing Aids In-Ear Digital Enhancer Voice Sound Amplifier 300mAh with Digital Display Charging Case. 【SMALL AND CONVENIENT DEVICE】It has a miniature appearance comparable to headphones, so you won't attract any unpleasant glances when using it.
eBay
Features:-It adopts a mini size design and a Bluetooth earphone appearance, which is different from the old hearing aid and is invisible and burden-free to wear.-Built-in the latest chip to achieve the best hearing aid function and help the hearing-impaired people hear sounds normally.-With multi-level volume adjustment, you can adjust the required hearing aid volume according to your needs. After wearing and turning on the device, double-click/triple-click to adjust the volume.-It automatically enters hearing aid mode when turned on, which is easy to use and more suitable for elderly users.-It can also be used as Bluetooth earphones. After turning on, you can switch to Bluetooth mode by long pressing it. Please note that the Bluetooth headset mode only.
eBay
The cause of howling/noise: The internal amplifier and the microphone are close to each other of the hearing aid, and the sound is continuously received and expanded, so it has a certain possibility of produce howling after power-on.
eBay
Eco-friendly silicone earplugs reduce whistling sounds and protect the ear canal. Hearing AIDS can also be used as Bluetooth headphones for making phone calls, listening to music and watching movies.
eBay