Max OSPL90: <111+3dB
Total Harmonic Wave Distortion :s10mA
Battery: Lithium battery
HFA OSPL90: 108+4dB
Frequency range :
F1S400Hz，F223500Hz
Certification:
ISO13485，IS09001，CE，FDA
Maximum sound gain :25+5dB
Working voltage:
3.7V
Color: black
Equivalent input noise: s29+3dB
Working current: s10mA
Single hearing aid size:
25#16.5*15.5mm
