Anticipating a release this month, the Rotino Sigma is the smallest mouse out there. From the specs it loks like it has an adjustable sensitivity of 1000dpi for normal office type use and lightning quick 2000dpi for gamers with an especially sensitive trigger finger. Measuring a measly 30 x 70 x 20mm and weighing 40g, it’s easy to picture this thing disappearing into teh depths of a laptop bag. Apparently available in four colors, white, black, red and blue, the price for Sigma’s Rotino laser mouse is $25.