Alienware Wired/Wireless gaming Mouse 610M- Dark. This gaming mouse comes with a custom-tuned high performance 16, 000DPI sensor, and high-endurance battery life. Also has an adjustable scroll wheel toggle that allows for switching between 12 and 24 steps per scroll wheel revolution, giving greater precision and control in-game. Alienware signature ergonomics caters to a majority of hand sizes and usage styles, and is designed to provide comfort for long hours of gameplay.