User Manual
I.  THE MAIN STRUCTURE,PRODUCT PERFORMANCE 
1.  THE MAIN CHARACTERISTICS 
●Confortable Wearing, fashionable and streamlined design clear and nature sound   
●Small size, fashion streamlined design, fit more ear contour 
●The gain characteristics: suitable for the mild ,moderate, moderately severe hearing loss 
person and the occasions where sound application are needed 
●Frequency  characteristics:  suitable  for  intermediate  frequency,  medium-high frequency 
and high frequency hearing loss person 
●Suitable for otitis media, strong vibration, Senile, tympanic membrane perforation caused 
hearing loss person 
2.  TECHNICAL CHARACTERISTICS TABLE   
● Power: DC: 1.4V, with the relative deviation of +5% and -10% 
● Ambient Temperature: 5℃-40℃; relative humidity≤80%; 
Feature 
Technical Parameter 
MAX.OSPL
≤(db) 
HFA 
OSPL±4(db) 
MAX.Gain 
±5(db) 
Frequency 
Response 
Range(Hz) 
Sound 
Gain 
THD 
128±5 dB 
115 
48 
300-4000hz 
>30db 
<10% 
3.  SCHEMATIC DIAGRAM OF FUNCTION 





