If it is breakaway the buckle will come undone without having to be manually unbuckled. Sorry if that doesnt make sense lol. Try gently pulling the collar open, if the buckle comes undone just by that it is breakaway. Most cat collars are, so if kitty gets stuck on something, the collar will come undone to free him.
I love the color options! My sister (^^ OState05) and I have cats. Hers is a fixed male and mine is a fixed female :D He would look good in red and mine would look amazing in the purple lol F&W and will be bidding