I bought the pros under the assumption that they had 5.0, seeing as the non-pro models have it. I got them today, and looking at the amazon listing and the box, I noticed they don’t state the Bluetooth version anywhere on either, I only found it stated in the User Manual. But if you look at the Amazon pages for the other Spirit earbuds, and the older earbuds like the Slim, they all clearly state it in the title.
That is a bit deceptive by Anker.