- High quality invisible hearing aid sound amplifier
- Super mini size and light weight, not easily to be seen
- Adjust volume to the minimum before wearing
- Increase volume gradually to avoid sudden increase in sound
- Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly
- Max Sound Output: ≥120 dB
- Max Sound Gain: ≥30 dB
- Harmonic Wave Distortion: f1000Hz≤4%
- Frequency Range: 250～3800 Hz
- Input Noise: ≤50 dB
- Battery: AG3 Button battery (included)
- Working Voltage: dc1.5V
- Working Current: ≤4mA
How to use:
- 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.
- If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
- Remove the battery if you do not use it for long time.
- 1 x K-80 Hearing Aid
- 4 x Earplug (different sizes)
- 2 x AG3 Button battery
- 1 x User Manual