Pocket Hearing Aid

We are offering pocket hearing aid s-7b.
technical parameters：
max out: 130db ± 4db　
max gain：56db ± 5db
harmonic distortion：≤10%
frequency range：300hz～4000hz
equvi input noise：≤32db
stanard battery：aa batteries,no 5
voltage：d.c. 1.5v
current：≤6.5ma
features:
1.medium power suitable for moderate to severe hearing weak people.
2.stable quality,simple operation,easy to use
3.low distortion,low noise
specification:
m--normal frequency
t--high frequency
o--turn off
0-8: small-lound
product weight：25g
product size：7.4*4.5*1.8cm
package：paper+plastic box
package size：12*8.6*3.2cm
carton quantity：120pcs
carton size：52.5*31*39cm
gw：12kg
nw：10kg