Promote To Cheapest! Hearing Aid F-138 Best Sound Amplifier Adjustable Tone Hear Aids

Features:

• 100% brand new sound amplifier behind the ear 

• Super mini size and light weight, not easily to be seen 

• Adjust volume to the minimum before wearing 

• Choose an earplug of slightly bigger size to avoid whistler 

• Increase volume gradually to avoid sudden increase in sound

 

Specifications:

• Max Saturated Sound Pressure: 130dB+5dB 

• Sound gain: ≥ 50db

• Harmonic Wave Distortion:≤ 5% 

• Frequency response Range: 300--- 4000 Hz 

• Input Noise: ≤ 30 dB 

• Power Voltage :1.5 V 

• Working Current : ≤4mA 

• Battery Type: AG13 button cell battery (included)

 

Package included:

• 1 x hearing aid amplifier

• 2 x AG13 button cell battery

• 2 x ear cap

• 1 x manual