Noise Cancellation & Sound Amplification:The hearing aids for seniors equipped with advanced noise cancellation technology, effectively reduce background noise, providing a clear and comfortable listening experience. The built-in mic captures the sound clearly, making it easier to communicate with others. Convenient button operation:Featuring a toggle switch and a continuous volume control knob,this hearing aid is specifically designed for seniors,allowing easy operation without the need to see buttons. Designed for Seniors:Our hearing aids are tailored for the elderly, featuring a design without left or right ear distinctions, ensuring you never have to worry about wearing them incorrectly. They combine modern technology with user-friendly operation, making them ideal for regaining your hearing freedom. Rechargeable Hearing Aids:The hearing amplifiers for adults are rechargeable, making it easy to charge your hearing aid, eliminating the hassle of constantly changing batteries, ensures uninterrupted hearing support when needed. A High-Quality Gift:JIAYINIDS hearing amplifiers make perfect gifts for elderly family members with hearing loss.JIAYINIDS hearing aids help our customer find the sound and happiness again. Packing Lists Hearing Aids*1 Charging Cable*1 Earplugs*4 Cleaning Brush*1 Manual*1 Why do my hearing aids whistle ? Normally, Wearing our hearing aid in error result in the disturbing whistling or squeaking noise coming from device is caused by called feedback. We recommend that few simple steps as followed to reduce or eliminate noise: The first, Please choose the appropriate ear domes according to the size of the ear canal and Make sure the „ear domes“ fit snugly in your ear . If your hearing aid’s ear domes does not fit in your ear properly, sound will leak out and back into the device’s microphone, causing the whistle sound. The Second, Please clean your device with our brush every time . Our ears produce wax naturally to trap and expel foreign substances, but when you have wax build-up in your ears and insert your hearing aids on top of the wax, the sound coming out of the amplifier will be blocked and returned to the microphone, causing a squeal. The Third, Adjust Volume Settings, Avoid setting the volume too high. High volume settings can sometimes cause echoes, try reducing the volume gradually. The Last , Please store your device in clean Case, If the hearing aid’s microphone is covered with wax or debris, it will make a noise.