Don’t know what breitling watches this fits, but I know it’s the wrong one for mine. The picture is the rider mounted on my watch shows how it fits on my breitling chronomat evolution 44mm. I didn’t know it was the wrong one until I tried to buy the luminous dot for it. When I removed it the hole which should go all the way through, didn’t. I’ll add more pictures after I take it off again. You can see, if you look closely that it doesn’t fit flush on the edge. I know it’s the correct one for some other models, but I don’t know which one. No luminous dot.
eBay