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Description:Features: 1) Resolution: 800dpi 2) Port: PS/2, USB, U+P available 3) Deluxe ergonomics design to comfortable hand touch 4) Fit for your left hand and right hand 5) Zoom in and zoom out function 6) Various colors available 7) Working on any surface except glass 8) Button life: over 1,000,000 times 9) System requirement: IBM / PC windows 9X / 2000 / ME / XP / NT4.0 Packing: White box, gift box, and blister box