About This Item:-The use of high-quality digital chips can effectively reduce noise and reduce noise damage to eardrums.-The dynamic speaker design allows the received sound to be processed to make the sound clearer.-Hearing aids can be charged for 3 hours and can be used for 25 hours. The rechargeable storage case is fully charged and can charge the hearing aid 4-5 times. -With storage box, easy to carry out, small size provides more convenience.-The sound guide wire can be bent and rotated 360 degrees, making it comfortable to wear on either left or right side.-It adopts in-ear detection, suitable for people with different ear canals. Put it into the ear, it will automatically open and close, almost invisible, and will not burden the ears with long-te.