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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) Fits for your left hand and right hand 5) Zoom in and zoom out function 6) Various colors available 7) Works 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 boxes, gift boxes, blister boxes