F-135 Mini Portable Hearing Aid Sound Voice Amplifier Behind Ear Enhancement Ear Hearing Aid
Specifications:
Color:as picture show
Frequency Range: 300~4000Hz
Total Harmonic Distortion:≤5%
Voltage:d.c.1.5V
Battery Type:LR44H (Not included)
Features:
-Strengthen the against external noise and make the sound output to the ear canal smoother.
Package Included:
1 x Brush
