Sjors has posted a new 50Gs article on the 21st Century Boys DW-003 by Tommy Guerrero. This is a limited edition collaboration model G-Shock designed by the pro skater. There's photos and details of the full battery change procedure. Follow the link over and read it all over yourself.
Link
Looks great! Whats the size on it diameter and thickness
I don't know the exact dimensions. But these are about the same size as the current DW-6600 and DW-6900 models.