Hearing Aid

We are offering hearing aid s-188 without microphone outside.
production license: cantonese food drug permit product no 200220595
product registration number: cantonese food drug permit 2011 no 2460193
product standards number: yzb/guangdong 0680-2010
features:
built-in sounder, clear voice, save electricity. Wear nature and comfortable, will not oppress the ear.
technical parameters:
* max out : 130 â± 4db
* max gain : 48 â± 5db
* harmonic dist: � 5%
* frequency range : 450hz ~ 3500hz
* equivalent input noise : � 32 db
* standard battery: ag13 button cell
* voltage: 1.5v
* current: � 3ma
specification:
product weight: 8g
product size: 4.6*3.8*0.9cm
packing details: paper+plastic box
packing size: 12*8.5*3.2cm
q.t.y/carton: 120pcs
carton size: 52.5*31*39cm
gw: 11kg
nw: 9kg