World's most compact mouse?

Produced by Doa Korea, the Slim G4 may be one of the smallest mice ever devised. It is only 0.2 inches thick, and when extended, 3.7 inches long -- but it is able to collapse to half that length for travel, and stores inside a laptop's PC Card slot. Moreover, a spool underneath the mouse allows users to store the USB cable without taking up more space. Inside the mouse is an optical sensor; controls include two buttons and a touchpad in place of a scrollwheel. Four colors to choose from include blue, pink, ivory and silver. No pricing is immediately available. [via Akihabara News]