Description Fine sound quality Comfortable listening - Intelligent noise reduction processing, low frequency noise reduction, clear sound, intelligent processing of environmental sound, little distortion, low noise. Volume adjustment (adjust the appropriate volume according to your needs), suitable for different hearing ranges. It can be used continuously for a week if you use it 3 hours a day. One-button switch and volume adjustment, easy for the elderly to use. Comfortable to wear - Ergonomic design, it is not easy to fall. its fit to wear and more comfortable. The sound tube is made of silicone, durable and comfortable to adjust, it can be rotated 180 degrees from left to right. You can wear it at will regardless of left and right ears, and it will not be affected by wearing glasses. Lightweight and easy to carry - Adult hearing aids are small and lightweight, only about 7g, different sizes of the headphones are suitable for everyone. Wireless ear hook and compact body, easy to carry, smoother communication. We advise you to clean the earplugs or earmolds regularly to ensure normal use of the hearing aids. howling is more likely to occur. Therefore, gradually increasing the volume from the bottom can effectively avoid howling. When the ear canal is completely sealed, there is no howling. Therefore, please use hearing aids after cleaning your ear canal and test earplugs from large to small to find the most suitable earplugs. After the hearing aid enters the ear canal, it is recommended to push the hearing aid with your fingers and hold it for 1-2 seconds, then release it to fully extend the earplug.