How is this a keychain

I bought this to put on my dogs collar just in case he runs away before we get a new tag with our updated address on it. The GPS tracker just came in the mail after ordering it a month ago. There is no way to attach it to the collar. It does not have a whole that it can be put on a key ring. So, I am unsure as to why they claim that you can put this on things that are easily lost because my other option was to put it on my keys which I lose often, however there is no way to do that.

The user manual that comes with the tracker is one that can be put on a keychain so I am unsure if this description is meant for a different tracker.

I still gave the product three stars because the app works and the GPS tracker works it just as it as useful as it claims to be.