https://tascam.com/us/product/dr-10l/top

https://www.amazon.com/Tascam-DR-10L-Recorder-Lavalier-Microphone/dp/B01LZ7UN44

$200, a bit pricey, considering Zoom, Sony and other devices can do the same thing, it does come with a microphone though, other recorders often don't include one.

Also, audio needs to be synced with video, get that wrong and viewers WILL notice.