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Please read the instructions carefully before operating the
product.
Thank you very much for buying our hearing aid.
When you see film, watch the play, have meeting, or have
classes, the product can help you to hear the sound clearly and
loudly. While in forest, if you want to hear very slight sound, it will
be a good choice. Please read the instructions carefully before
operating the product.
I.NOTICE
II. INTENDED USE
1.1 What is the hearing loss?
A speech frequency puretone average (average of hearing
thresholds at 0.5, 1, 2, and 4 kHz) of greater than 25 dB
hearing level (HL) in both ears was defined as hearing loss per
World Health Organization criteria, and this is the level at
which hearing loss begins to impair communication in daily life.
(Extracted from the literature of: World Health Organization
prevention of Blindness and deafness(PBD) program. Preven-
tion of Deafness and Hearing Impaired Grades of Hearing
Impairment)
2.1 Medical purpose
The hearing aid was intended to compensate of impaired
hearing.
2.2 Intended patients and environment
The hearing aid expect used indoor and outdoor environ-
ment, any patients if need hearing compensated decided by
doctor can be using but the patients must over than 36
months old.
2.3 Side effects
- For the patients skin sensitive with silicon material, may be
caused the ear canal pruritus.
- First use may cause ear canal appear temporary maladjust-
ment, such as slight pain.
1.2 What is the hearing aid?
Jinghao hearing aid was used the air-conduction type to
compensate of impaired hearing. It is a wear sound-amplifying
device. The fundamental operating principle of hearing aid is to
receive,
amplify, and transfer sound to the ear drum of a hearing
impaired person.
