I want to be able to put on a lavalier mic and have a friend of mine put one on, then record the audio as we wander around to shops and restaurants. I was thinking about a bluetooth mic with a lavalier plugged into it for each person, then having them both go into a phone to record it (iPhone 11 or a Pixel 4XL).
Looks like Sony has one for $125 or the Rode for around $200. Or maybe someone thinks there's a better way. The problem with just carrying around an open recorder, like a Zoom or a Tascam, is just that it's another thing to have to fiddle with. But that still might be better.