Gigabyte Wheel USB Wired Laser 1600 DPI Gaming Mouse, Metal Black (GM-M6880X) Powered by 1600dpi Accuracy Laser Sensor, High accuracy laser engine offers consistent and reliable performance for absolute control and precise mouse movement. Equipped improved laser sensor, M6880X allows you to hit the target precisely. 3-Stage DPI Adjustment, 800/1200/1600 3-Stage DPI adjustable switch for quick on-the-fly DPI adjustment Anti-slick Rubber Grip with Ideal Shape for comfortable Game play, Anti-slick ergonomic rubber grip and matt coating surface reduce wrist strain and maximize comfort during extended use. Forward and Backward Buttons, Enjoy quickly browsing your favorite webpages or surfing throughout documents via the back and forward buttons which just located conveniently under your thumb. 100g Optimal Lifting Weight 5 million clicks lifetime Omron switch