Description:
A-155 is a rechargeable hearing aid with attractive design appearance looks like a Bluetooth eraphone，nobody knows it's a hearing aid; easy for carry and can be used without earhook or with earhook.

Specifications:
Bluetooth Pocket Hearing aid ( no bluetooth function )
Max Sound Output: 127±4 dB
Max Sound Gain: 48dB ± 5dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 450 to 3800 Hz
Input Noise: ≤30 dB
Battery: 70mAh Lithium Battery
Working Voltage: dc 3.7V
Working Current: ≤4mA
Working time: 20 hours
Color: Black
Net Weight: 9.5g
Item Size: 4.35*2.0*1.3cm
Package Size: 15.3 x 9.6 x 3.8cm
Certification: CE

Package included:
1* A-155 Hearing aid
3* Earplug (different sizes)
1* EU Plug Charger (110-240v.)
1*User manual

Note:
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 choiceof earplugs ， make sure no air leakage.
Keep the ear plug clean