C505 4 in 1 pack combination, specifically designed for play. USB multimedia keyboard with color backlight, 19-button anti-ghosting. The mouse is ergonomic. The appearance of contour adapts to the curvature of the palm, which is easy to use and comfortable, so you can enjoy the game for a long time. The 3200 DPI high-resolution light sensor can track high-speed data, react immediately to the opponent's movement, and quickly find targets in the game. With the side buttons you can move forward or backwards quickly. Use the DPI Change button to set the mouse movement speed and remind you the settings you are using. Ergonomic design has a comfortable leather ear protector, clean stereo and high sensitivity microphone, and the mouse pad has a smooth tissue surface for smooth operation. The bottom is non -slip and precisely locked to prevent deformation and extend the lifetime. The C505 package is a combination that fully satisfies the game's efforts.