Hi guys I can't find any posts about this on here, I have just bought one which is fully working, not pristine but decent for its age. I will take apart next week to see if it needs a new DD, we all know it will. (is the pope catholic?!?!) http://www.walkmancentral.com/products/wm-f5 Doesn't appear to be a quartz locked DD but W+F should still be in the region of 0.08% wrms. It would be awesome if I got 2, I would take it jogging with the Mrs, sure would get some looks