Main Features And Specifications: 1 ) Floating logo 2 )Your company's logo can be put into the Liquid 3 )Color and floating can be selected according to your requirement. 4 )High Resolution 800 -1200DPI 5 )Optical surface scanning, can be used virtually on any surface without mouse pad 6 )Without mouse ball, cleaning is not necessary 7 )Very precise cursor movement 8 )Interface : USB, PS/2 and U+P Combo are ports available 9 )Switch: 60+/-15gf 10 )Advanced optical design, exact orientation 11 )System requirements: PC for IBM XT/AT, 386, 486, and Pentium compatibles 12 )Supporting OS: Windows 95, 98, 2000, ME, NT or XP One years guaranty Safety/Quality Approvals: CE, FCC