A4Tech 46059 OP-760 USB

 5 M Clicks Button Lifetime Extreme quality offer over 5 million clicks guaranteed. 1000 DPI Guaranteed smooth and accurate tracking anywhere, even on furry textiles. Throw away your mouse pad! Dust-resistant Wheel Dust-resistant design prolong wheel life-span. 8 in One 8 gestures to perform selectable hotkey commands. 4-way Wheel Smart horizontal & vertical scrolling.   Model: OP-720 Type: Wired Ergonomic Design: Symmetric Sensor : Optical Resolution: 1000 DPI Buttons No.: 3 Port: USB or PS2 Cable Length: 150 cm System Requirements: Windows XP / Vista / 7 / 8 / 8.1 / 10