SKU: A4TECH-FM12 Categories: ACCESSORIES, Mouse, OFFICE MOUSE 5M Clicks Lifecycle Mouse 8-in-One Mouse 1200 DPI Optical Sensor High-precision sensor offers accurate tracking. Symmetric Design Symmetric design is adopted for both right/left handed users. Wider Scroll Wheel Wider scoll wheel provides fingerfit comfort for long time use. Widen Wheel Skin-friendly widen design for smooth and comfortable tracking. 4-Way Wheel Smart horizontal & vertical scrolling. 8-in-One 8 gestures to perform selectable hotkey commands. SPECIFICATIONS Model: FM12 Sensor: Optical Type: Wired Ergonomic Design: Symmetric Resolution: 1200 DPI Buttons No.: 3 Port: USB Cable Length: 150 cm System Requirements: Windows XP / Vista / 7 / 8 / 8.1 / 10