I have them, picked up at FT, pretty nice and well made. and lasts a good long while.
Seems to be just VV in reality though - The VV and VW numbers do not equate electrically or mathematically. There is no switch between VV/VW, just some arbitrary printing on the dial 3.2v=4w to 4.8v=15w and no digital screen. If you are an enthusiast and fret over numbers this probably isn't for you. Just a nice stylish ego with a nice bit of power, comparable to my MVP (when fully charged).