F-138 Hearing Aid

F-138 Hearing Aid
 

Product description:

Best Sound Amplifier Adjustable Tone Hearing Aids Aid
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
• Color: as pictured
Technical 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
F-138 Hearing Aid