Features Specifications: Wired Mouse With small fan/mouse WIRED OPTICAL MOUSE WITH FAN DESIGN 1) Classical silver and black mous 2) Buttons: a) 3 buttons b) Button life: over 5,000,000 times 3) PS/2 or USB available 4) 800DPI 5) Excellent performance in Internet performance. 6) With zoom in and zoom out functions 7) Can work on any surface except glass 8) Ergonomic shape, comfortable for both hands to use 9) Product dimension: 114*63*38mm