Mini Hearing Aid
Techinical Specifications:
Max Sound Output: 127dB ± 4dB 
Max Sound Gain:  52±5dB 
Low Frequency of Hearing Aid:  580Hz~~2.8KHz
Middle Frequency 700Hz~~4.8KHz
High Frequency 780Hz~~7.8KHz
Wide Frequency  910Hz~~10.5KHz
Input Noise:  ≤30 dB
Battery:    Lithium Battery
Working Voltage DC 5V±0.5V
Working Current:      ≤8Ma
Measurement: 2*1*5cm
Net Weight: 20g
*Super power analouge hearing aid
*Telephone function,good for answer the phone
*Sound gain to 60dB
*N-H for adjust the frequency
*Loud and clear voice
Packing Information:
44*34*52.5cm  100pcs/CTN/0.078CBM/25KGS