Bakeey K 188 Mini Size Ear Hearing Aid Sound Amplifier Micro Wireless Hearing Aid for Sale with BTC on


Price : 0.0003591 BTC

Other Smart Wearable Device

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Product Specification

Max Sound Output: 110dB+5dB
Max Sound Gain: 30 dB+5dB
Harmonic Wave Distortion: 10%
Frequency Range: 300 4000Hz
Input Noise:  ≤40 dB
Battery: A10                          
Working Current: ≤3mA       
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. 
Keep the ear plug clean
Remove the battery if you don't use it for long time.