NOT RECOMMENDED for people with smaller ear. Only Touch Control With Your Finger – So Easy Turn On: After put in ears well, press up to 3s to turn on hearing aids when you hear twice “beep”. Turn Off: Before removing from ears, press up to 3s to turn off hearing aids when you hear twice “beep”. Volume control: Press to adjust the volume. There are 6 sound levels of volume, and you will hear a …
https://www.amazon.com/Rechargeable-Cancelling-Amplifier-Aioze-Portable/dp/B08NC9QZ5H

