Features:
Maximum Saturation Sound Pressure: 129dB ± 4dB
Maximum File Acoustic Gain: 58dB ± 5dB
Harmonic Distortion: ≤5%
Frequency Response: 450-3500Hz
Equivalent Input Noise: ≤ 30dB
Standard Battery: AA battery
Operating Voltage: D.C. 1.5V
Operating Current: ≤ 4mA
Color: White
Size: 6.8 x 4.2 x 1.6cm
Net Weight: 26g
Feature: N-H files
Package included:
1 x hearing aid amplifier
4 x earplug (different size)
1 x manual
1 x case