AliExpress

Rechargeable Sound Amplifier Mini Hearing Aid Cheap Wireless Headphone

$9.01 Oferta

: En stock

: Other

1.Use Standard USB Cable and recharge to connect interface ,then charge hearing aid until full .,
2.Before you use this item ,you have to turn the ON-OFF switch to Off,and turn the sound volume to minimum
3.Then put this item on you ear, keep it tightly
4.Next, turn this item ON, adjust the volume until you hear clear sound

Technical Parameters:

1.Max Out :(±5dB) 130
2.Max Gain:(±5dB) 40
3.Frequency Range: 300-4000hz
4.Max Working :18h
5.Equivalent Noise Input: ≤ 30dBSPL
6.Harmonic Distortion:≤5 %
7.Voltage: 3.7V
8.Current: ≤ 4mA
9.Battery type and capacity (mah): ≤30
10.High frequency averages:100


Adjustable Voice from Min to Max (1-4)

N:Normal Working State

H:Reduce Noise of Low Frequency

Off:Switch off

USB interface easy to use and operate by everybody

2 -3 Hours Full charge.



Use Step of hearing aid




more than 10 years Professional QC Medical Equipment for all Testing hearing aids quality before ship out from our


$9.01

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COMPRASLIBRES.COM

1.Use Standard USB Cable and recharge to connect interface ,then charge hearing aid until full .,
2.Before you use this item ,you have to turn the ON-OFF switch to Off,and turn the sound volume to minimum
3.Then put this item on you ear, keep it tightly
4.Next, turn this item ON, adjust the volume until you hear clear sound

Technical Parameters:

1.Max Out :(±5dB) 130
2.Max Gain:(±5dB) 40
3.Frequency Range: 300-4000hz
4.Max Working :18h
5.Equivalent Noise Input: ≤ 30dBSPL
6.Harmonic Distortion:≤5 %
7.Voltage: 3.7V
8.Current: ≤ 4mA
9.Battery type and capacity (mah): ≤30
10.High frequency averages:100


Adjustable Voice from Min to Max (1-4)

N:Normal Working State

H:Reduce Noise of Low Frequency

Off:Switch off

USB interface easy to use and operate by everybody

2 -3 Hours Full charge.



Use Step of hearing aid




more than 10 years Professional QC Medical Equipment for all Testing hearing aids quality before ship out from our


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