Groovy Handy trackball mouse [ Analog sensor ] USB connection white GM-OPTB02W

ship from Japan A handy trackball mouse that can be used with one hand while sleeping or standing Buttons: 2 buttons + 1 trigger + scroll Reading method: Optical (600dpi) Connection terminal: USB2.0/1.1(A type male) USB cable length: approx. 155 cm Size/Weight: 77 x 48 x 55 (mm) / 90 g Supported OS: Windows8/7/VISTA/XP/2000/Me, MACOSX(9.0 or later)