XeTech

Form factor: The PSP Go has a 3.8-inch wide screen (versus 4.3-inch on all previous PSP models). It's said to be 43 percent lighter than the PSP 3000, which means it would tip the scales at about 3.8 ounces. The PSP Go design is very reminiscent of the Sony Mylo--the screen slides up to reveal the controls.

Storage: The Go will offer 16GB of built-in flash memory, and it's expandable via a Memory Stick Micro (M2) slot. There is no UMD (Universal Media Disc) drive on the PSP Go. While that no doubt allows for the smaller size (and, we hope, the potential for better battery life), it also means there's no way to play existing PSP software you might own on the PSP Go.

Controls: While the layout may be different, the control scheme on the PSP Go is little changed from earlier PSP models: a four-way d-pad on the left, the standard quartet of geometrically coded Sony controls (circle, square, cross, triangle) on the right, select/start buttons in the center, and the PlayStation"home" button to the left of the screen.