The voice is not quite perfect on this sentence, as of August 31st, 2017, so I've taken the liberty of re-recording it.
It's only a small error, but var is a common and important word so it should really be correct everywhere.
Please find a correct recording on http://duolingo.vydea.io/073017dc825c42b89ff10ffa436a1ef4.mp3
For more info on re-recordings, please check the info thread: https://www.duolingo.com/comment/23723515
Thanks for listening. Ha en bra dag! :)
In this case, the main translation is the wallet. But it could just as well have been your wallet, because we often use a definite form to refer to whoever is most likely to be the owner. We can and do say din plånbok etc too, but usually only when it's not clear from context who the item belongs to. Here's a link to a post about this: https://www.duolingo.com/comment/6014446