FIIL Hearing Aid Sound Amplifier Behind-the-Ear Hearing Aid for Mild to Moderate Hearing Loss (Sold Individually - Left or Right Ear)

Recommended for those who say, I don't need a hearing aid yet, but I'm starting to have trouble hearing small sounds...
This sound amplifier is clearer, easier to hear, lightweight, compact, and simple to operate!
A sound amplifier you can wear on your ear all the time.
Weighing only 5g, it's so lightweight and fits snugly on your ear, you'll forget you're wearing it.
Operation is simple with just a volume control button, making it easy for seniors to use with confidence.
[Product Specifications]
■ Size (approx.): 1.9 cm (height) x 1.4 cm (width) x 2 cm (depth)
■ Weight: 5g
■ Material: ABS resin/other
■ Maximum Acoustic Gain: 40dB - 45dB
■ Set Contents: Main unit, ear tip x 6 (S/M/L x 2 each), catheter x 2, batteries x 2, cleaning brush x 1, warranty card x 1, instruction manual x 1
■ 1-year quality warranty
How to replace the battery
1. Remove the battery
Gently open the battery case and remove the old battery.
2. Insert the battery
(1) Remove the sticker from the battery and leave it for about 1 minute.
(2) Pay attention to the orientation of the battery's positive (+) and negative (-) terminals, insert it into the battery case, and gently close the battery case.
Caution:
If the battery does not fit properly, do not force it. Check the orientation and type of the battery.
If you will not be using the hearing aid for a while, please remove the battery from the hearing aid.