Works well under some conditions. Echos under other conditions. Likely, it is called operator learning experience.

The device works, but it has so much latency that it sounds like an echo.

The device works okay, but the software is no longer compatible with android phones. So to setup the device to be able to use it you will need a very old phone that still works. The batteries I got seemed old when I got them and never lasted long enough.

My overall impression of the device is, these devices were made many years ago and parts like the batteries and the rubber usb port cover have reached the end of their life without ever being used.

Very good device and appears to do what we wanted.

The HearLink 3-in-1 does what it says on the tin. I use Shokz Airopex. One thing I didn’t notice mentioned was that there is a very slight delay in sound making the audio experience echo a bit. While that does not detract from the performance directly it does give the impression of living in a gold fish bowl.