From the Asian part of the world comes a cool, small, compact and useful mouse made by SAMWA.

the useful part is the USB dongle which is located under the mouse, rarity to see in most mouses;
the small and compact part is the fact that that the dimensions 52x90x36mm and weight of 64grams are also good for a mouse;
the cool part is actually the worst one, the SAMWA mouse is wireless and works with 2AA batteries which can only last 120 hours if you are always using it.
On standby mode it can get up to 297 hours, but who cares about that?

Via Akihabara