This set of in-ear hearing aids is a workhorse.I have to set it to the lowest volume level for me. There are 4 modes and 6 volume levels. Available in black or white, A+++
https://www.amazon.com/dp/B0BJ62QK1G #HealthTree ...
Every first aid kit should include a device like this one. It checks blood oxygen levels as well as pulserate. This is the same device used at your doctor's office with one improvement: it has bluetooth for storing results to your phone. A+++ ver...