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2Pcs BTE Digital Elderly Hearing Aid Voice Sound Amplifier Behind Ear Adjustable

Features:
1. 100% Brand New Sound Amplifier Behind the Ear
2. Super Mini Size and Light Weight, Not Easily to Be Seen
3. Adjust Volume to the Minimum Before Wearing
4. Choose an Earplug of Slightly Bigger Size to Avoid Whistler
5. Increase Volume Gradually to Avoid Sudden Increase in Sound
6. Color: As Pictured

Specifications:
1. Max Saturated Sound Pressure: 129db+4db
2. Sound Gain: ≥ 50db
3. Harmonic Wave Distortion:≤ 5%
4. Frequency Response Range: 300--- 4000 Hz
5. Input Noise: ≤ 30 Db
6. Power Voltage :1.5 V
7. Working Current : ≤4ma
8. Battery Type: Ag13 Button Cell Battery (Included As a Gift)

The Questions of Wearing Hearing Aids:
1. How to Wear the Hearing Aids?
You Might Think the Voices Are Not Real and Clear Enough for the First Using. Because You Have Become Accustomed to the Original Hearing Status. You Would Heard some Unfamiliar Voice for the First Using Because Haven't Adapt yet. the Main Way to Solve This Problem Is Make some Necessary Adaptive Training, Beginning Time Not Too Long, the Volume Is Not Too Large, Slowly Adapt.

2. How to Do the Adaptive Training?
Hearing Aid Adaptation Training Is Not Complicated, the General Principle Is to Adhere to Wear, Step-by-step Adapt:
(1) the Daily Wearing Time Should Be from Short to Long;
(2) the Volume Adjusting Should Be from Small to Large;
(3) the Communication Environment Should Be from Quiet to Complex, from Simple Complexity.
So Step by Step Adapt, in Order to Make You As Soon As Possible to Through the Adaptation Period, and Make the Role of Hearing Aids to Maximize.

3. Why You Can Hear the Whistle Voice When Wearing the Hearing Aids?
Earplugs and Ear Contact Area Is Strictly Closed, the Amplified Sound Is Leaked from the Cracks and Returned to the Microphone to Enlarge to Produce the Whistle. This Phenomenon Is Similar to Our Common Howling That the Microphone Close to the Speaker.
(1) the Hand or an Object Close to the Hearing Aid, Due to a Part of the Sound-reflecting in Your Palm or the Object and Returns to the Microphone to Further Amplified.
(2) the Hearing Aid Is Not Completely Inserted into the Ear Canal or Not Tight Seal with the Ear Canal Wall, the Amplified Sound Leaks and Returns the Microphone.
(3) a Lot of Earwax in the Ear, Due to the Earwax Embolism, the Amplified Sound Reflections to the Earwax Again and to the Microphone, Can Also Generate a Feedback.

4. How to Avoid the Whistle?
(1) Adjust the Hearing Aid Volume Knob to the "1" Position, Then Inserted into the Ear Plugged As Far As Possible, Adjust the Volume to the Most Clear Position.
(2) If the Earplug Cannot Plug Well, Please Change to the Other Suitable Earplug Plugged Ears, Do Not Leak Air.

How to Use:
1. Gently Open the Battery Compartment Cover and Press into a Positive and Negative Direction and Model Appropriate Button Batteries .
2. You Can Also Choose the Same Size Zinc-air Battery, Can Work Longer. This Battery Is to Generate Energy by Contact of Oxygen in the Air . When the Tape Is Torn off the Surface of the Battery , the Battery Begins to Discharge , so When You Need to Use It Only to Tear off This Layer of Protective Paper . Battery Life Could Be a Few Days , It Could Be Weeks, Using the Length of Time Depends on the Degree of Hearing Loss , Use the Volume Size and the Quality of the Battery Itself , When the Power Is Low , Please Replace the Battery .
3. Make Sure the "on" Switch off or Adjust the Volume Knob to the "1 " Position Before Wearing .
4. the Ear Hook on the Ear , and the Ear Sese and Try Plugged into the Ear . ( Note : at This Point the Machine Should Be Turned off , the "on" Switch Should Be in the "O" File , Volume Control Knob Should Be in the "1 " Position , Otherwise the Machine Ear Headphones Stuffed Instant Feedback Generated Sound May Be Caused by People Does Not Apply . )
5. the "on" Switch to "N" File , and Then Slowly Adjust the Volume Knob to the Clearest Sound Can Be.
6. If You Feel a Howling Sound