C490 4-in-1 package combo, designed for gaming. USB multimedia keyboard with color backlight, 19-keys anti-ghosting. The mouse is ergonomically designed. The contour design of the appearance conforms to the curvature of the palm, which is easy to use and comfortable to hold, allowing you to enjoy the game for a long time. The 2400DPI high-resolution light sensor can track high-speed data, instantly respond to opponent movements, and quickly locate targets in the game. The DPI change button lets you adjust the speed of mouse movement and reminds you which settings are currently in use. Ergonomic design with comfortable leather earmuffs, clear stereo and high-sensitivity microphone, and the mouse pad has a smooth cloth surface for smooth operation. The bottom is non-slip and precisely locked to prevent deformation and prolong life. The C490 package is a combo that can fully satisfy your gaming pursuits.