Callaway Golf has launched its newest golf GPS device, the Upro MX. It's an update of the Upro, with technologies that include a full-color touch screen and a precise optical finger navigation system. More than 25,000 courses are loaded into the gadget upon purchase, with high-resolution aerial photography of each one. The golfer can ?view? the coming holes from various vantage points. He can also keep multiple scores, take notes, and track individual shots. It will be out in May with a retail price of $199 for the basic kind, with no annual fees.