Laptop PC 7 Buttons 2000 DPI Wired Mice Optical USB Gaming Mouse Music Control Dual-mode switch system: Game mode & Multi-media mode. 7 buttons, including Cursor & Pulley, Left Button, Right Button, Advance, Retreat, DPI Switcher, Fire key. 500-1000Hz Adjustable full FPS design. 800/1200/1600/2000 DPI adjustable. Ergonomically designed, long-term use without fatigue.