To the best of my knowledge they're rebranded DigiPass Go 6's and those were expected to last 7 years so that's about right if you bought it with 1.0. As others have written above, sorry you can't replace the battery and if it loses power then it won't generate the right numbers.

Quote Originally Posted by Mycow8me View Post
I wouldn't mind if these were transferable into a software token app though.
You can't directly convert into a software token, but you can just remove it and then straight away re-add a software token (make sure to save a copy of the removal password it gives you!). I switched over to the software token as soon as it came out and I've never had a problem with it and it's much more convenient because of always having phone with you.