The Corsair nightsword RGB performance tunable gaming mouse is equipped with a cutting-edge 18, 000 DPI optical sensor, sophisticated weight Calibration and a real-time center of gravity detection system. A comfortable contoured design, ten programmable buttons, and ultra-durable Omron switches deliver first-rate gaming performance. Two sets of weights and six mounting locations allow you to adjust weight between 119g and 141g With over 100 different configurations. Use Corsair CUE software to enable real-time Smart weight tuning, control dynamic four-zone RGB lighting, create custom macros, and calibrate your mouse to your playing surface. And with onboard profile storage to take your settings with you, night sword RGB makes for perfectly calibrated gaming anywhere, anytime.