1Full use of the ear structure to design the appearance of the hearing aid, which makes it perfectly fit wearer's ears for a comfortable wear 2Nickel-hydrogen charging battery used and no need to battery replacement 3You can hear clear and natural sound, no embarrassment, no shame when seeing and visiting your relatives, friends 4Portable with moderate size, it is handy to carry anywhere you are heading to 5Suitable for persons with slight hearing impairment of severe intermediate frequency and high frequency loss
