We haven't seen much of Rockchip's 600MHz, RK2808 processor for mobile devices outside of China and, while we're not entirely confident that this particular implementation will ever grace our retail shelves, it is nice to see that this semi-working prototype exists... somewhere. It's the Vi10 from Onda and it sits somewhere between a PMP and a tablet, sporting the same body as the company's earlier VX575, giving it a five-inch screen, but inside has that Rockchip processor powering an Android install. Connectivity is said to come courtesy of WiFi or 3G and, well, that's about all we know at this point -- perhaps, all we're likely to ever know.