Breitling dual analog/digital movement battery replacement?

[bcar473]

My uncle passed on his entire replica collection, and all the quartz watches need new batteries.  On most, I was able to pop the batteries out and then see what I need to buy, but this one have been really tricky to get apart and it's not a standard movement where one can find any info with a search? (Maybe I just don't know the right keywords!!!  Lol)

I was able to remove a retaining ring, but can't figure out the release for the crown to get the movement out and release the strap around the battery.