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WK-220 CE Approval , Hearing Aid

Specifications

1.Not for otitis media or ear maturation.
2.should be consulting a qualified audiology or otology doctor as following case:
1)Obvious congenital or traumatic ear canal malformation
2)It has active ear discharging or the secretion of history during last 90days
3)It has suddenly or progressive hearing loss during last 90days
4)Acute or chronic vertigo
5)Air-bone gap is equal to or greater than 15dB at at pure tone 500Hz,1000Hz and 2000Hz
6)Cerumen embolization or ear canel with foreign body.
7)Ear pain or discomfort
Technical
size:53*26.5*8.6mm
weight:5g
working voltage:DC1.5
Working Current: ≤1.5 mA
Frequency Response:500-3200Hz
Maximum Saturation Acoustic Output:129dB ±3dB
Full-on Acoustic Gain:36dB ±5dB
Total Harmonic Distortion :<10%
Equivalent Input Noise:<32dB

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