Doosl Hearing Aid for Ears BTE Ear Assist Device,Suitable For Any Ear Shaped,Volume Control,USB Rechargeable,Adjustable Sound Hearing Amplifier for Elderly Hearing Loss,with Noise Cancelling

Features:

Quickly Charge

Its powerful rechargeable battery provides up to 80 hours of continuous work, and a full charge of about 4 hours.

Updated Design

Germany Digital chip, fine sound quality, comfortable listening. hearing aids not only has better double noise reduction and prevent howling, but also has the function of instantaneous strong sound intelligent ear protection. 3 different frequency modes and 4 channel for you choices, ensure you can hear a clear voice in different environments by adjust your settings.   

Sweat Proof

The internal nano-coating technology protects the hearing amplifier from sweat during outdoor activities. Very suitable for walking, jogging, hiking, yoga, traveling, etc. Thermoplastic elastomer (TPE) medical materials are soft, flexible and ultra-lightweight. 

Easy to Control

The knob allows you to easily adjust the volume, and one button controls 4 modes, which can perfectly adapt to different listening environments. It is strongly recommended that you read the instructions carefully and observe the illustrations carefully

Before use.   

How to reduce feedback/whistling for this hearing amplifier?

(1)Adjust hearing aid wearing angle to ensure no air circulation then howling sound will not be produced and then turn it on.(It is recommended that the microphone face up)

(2)Ensure the earplugs suitable.If it is too loose, replace with a small one.

Note:This is normal for the hearing aid to howl when air in just like that when singing in a KTV, the microphone makes a harsh call

Specifications:

Type: Hearing aid

Product Size: 0.65 x 0.44 x 1.69 inch

Weight: 0.19 lb

Max. saturation sound pressure level (SSPL):130dB±4dB

Full on Acoustic Gain: 45±5dB

Total Harmonic Distortion (THD):F>1000H  15% F<1000H  10%

Frequency Response: 450-3500 Hz

Equivalent Input Noise: 32 dB

Battery: Rechargeable

Battery Current Drain: 4 mA

Estimated Battery Life: 48 Hours

Rated Voltage: D.C 1.5V

Package content:

1 X Hearing Aid

4 X Earplug

1 X USB Cable

1 X Manual

1 X Brush