I just found out about these yesterday and ordered one. They look simply fantastic.
Here's a YouTube video of it in operation. The YouTube video was posted on 11 Sep 2020, so it looks like this is very new.
When you shoot one of the targets, it locks down and the other one pops up. The reason I like it is because it's a reactive target that works very much like the targets used for bi-athalons, where the target flips from black to white when hit.