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There are two shapes of hearing aids, behind-the-ear and in-ear.

       In-ear hearing aids are divided into concha-cavity type, ear canal type, deep ear canal type, and ultra-concealed deep ear canal type according to different shapes and sizes. This is basically the smallest shape hearing aid at present, because of its compactness and exquisiteness. The invisible and beautiful appearance has won the favor of the majority of young hearing impaired people.However, because of its extremely small size, its receivers and amplifiers require higher requirements. Generally, the price is more expensive, basically around 5 yuan or more than 7.5 yuan or even more expensive, and not every hearing impaired person can choose it. Except for patients with otitis media, they can’t wear it. Despite its small size, it has requirements for the size of the user’s ear canal, and it must be of sufficient size to be worn.The standard is: the narrowest part of the anteroposterior diameter or upper and lower diameter of the ear canal should be at least XNUMXmm. The diameter of the thinnest part between the first bend and the second bend of the ear canal should not be less than XNUMXmm.In addition, due to its small size, its power is bound to be limited. It is only suitable for patients with moderate hearing loss, and the power with more severe hearing cannot be reached.

When choosing a hearing aid first, you should choose according to your hearing loss, ear size, lifestyle, amount of earwax, personal preferences, and common functions.The following points should be paid attention to when choosing a stealth machine:
Hearing impairment:
       The first thing to consider when choosing a hearing aid is the severity of hearing loss.Severe hearing loss makes hearing aid devices require more powerful receivers to provide clear auditory feedback.Hearing aids to invisible customized machines can only achieve 110dB at high power. Hearing aids generally reserve a margin of 10-15dB to adjust the sound quality. If the gain compensation is close to the saturation gain of the hearing aid, the hearing aid will easily produce howling.So some severe deafness may not be suitable for invisible Hearing aid .

What kind of person can wear invisible Hearing aid ?

The size of the ear canal is also important:
       The size and shape of the ear canal will also determine whether you are suitable for wearing a customized hearing aid.If your ear canal is small, it may not be suitable for custom invisible hearing aid series.Because your ear canal may not provide enough space to accommodate all the components inside the hearing aid.Therefore, if you want to choose an invisible hearing aid, you can go to the store and have an optician take a hearing test for you first, measure the size of your ear canal, and advise you on choosing a suitable hearing aid.

Your functional requirements:
When choosing, you need to consider the most practical functions for you.For example, a hearing aid equipped with Bluetooth and a directional microphone can help you hear sounds and understand words better.Then you must choose a targeted hearing aid according to your actual needs.