Travel Wall Charger fits Creative Zen Vision / Vision:M / Sleek / Sleek Photo...
It works even better than the USB charger.  It charges faster and you can listen to the Zen while it's charging.  However, when I listen to it while charging, I hear a high pitched buzz that is somewhat soft but still audible.    On a final note, the picture isn't what I got.  The charger in the picture is much bigger and bulkier than mine...