Z2 Description: 1.Point and Click in Comfort-Ergonomic Design,Soft-touch and comfortable to use .reduce the Fatigue of working. 2 Powerful laser sensor for the best operational activity. colorful solution for your selection.accurate orientation, Excellent performance in computer games. 3 Compact laser mouse with 7 buttons and noiseless scroll wheel. 4 Three DPI in variouos demands: 3 kinds of DPI Shift Ability with Color Indication 5 DPI Levels: 800 - 1600 - 2200 DPI, No Driver Needed! 6 2XFire Button,click the "2-3-4XFire Button" can be rapidly opened files.a significant reduction in the number of keys, saves time and effort. 7 Compatible with WINDOWS 98/2000/NT/ME/XP/VISTA . Properties: * Dimension: 120 x 68 x 38 mm * Weight: 124+/-10 g * Interface: USB and PS/2 ports . * Key Number: 7 acute Button. * Safety Approval: FCC,CE ,ROHS * Keystroke life: 1,000000 cycles * Cable length: 150 cm. * Packing: Blister, color box .