The plot deepens. The same site compares the V5 to the Hanwang N516 here.
http://www.mobread.com/product/hanwang/2008126.html
It looks like the JetBook but the technical specifications are interesting. It has a 5" screen but the resolution is still 800x600 pixels like the 6" screen we are used to. The battery is 1500 mAh 3.7V.