Power tone Hearing Aid

Max sound output: 130±5dB
Sound gain: ≥50dB
Total harmonic wave distortion: ≤5%
Frequency range: 300~400Hz
Input noise: ≤30dB
Current: ≤4mA
Voltage: d.c. 1.5V
Volume Control: 0-4(small to loudly)
Tips: Adjust volume to the min voice before wearing; Increase volume gradually to avoid sudden increase in sound; Keep the ear plug clean; Remove the battery if you don't use it for long time.
Package Content: 1 x Hearing Aid; 2 x Button cells; 1 x Cleaning Brush; 3 x Earplug (different sizes); 1 x English manual