Innovative Light Strike (LK) optical technology powers the Premium LK Optical Switch & Scroll Wheel that reacts at light speed with a quick 0.2ms click response. Customizable RGB LED lighting Vivid RGB lighting zones with 16.8 million colors and virtually unlimited lighting customization. Precise Gaming Optical Sensor PMW 3325 - 5000 DPI / CPI On the Fly DPI adjustment in 100 DPI increments. Our X'Glide metal mouse feet technology adds durability and improves the glide of the mouse. Advanced custom Macros and 8 Fully programmable buttons.