[KOORUI SERVICES] KOORUI provide high-quality gamer keyboard and premium services, included 12 months warranty. If you find any damage, malfunction or missing accessories, please feel free to contact us. [Multi-Functionality and Compatibility] The keyboard has the leading dual system fast control technology, quick MW technology can realize the common multi-function combination control under Apple and Microsoft system, including multimedia control and other high frequency use scenarios, easy for you to achieve fast use. [Anti-Ghosting Technology] With full-key anti-ghosting to ensure every keystroke is registered, even when multiple keys are pressed simultaneously, enabling users to enjoy a seamless and uninterrupted gaming experience. [Hot-Swappable Switches] The full keys mechanical keyboard comes with six extra switches (two each of red, brown, and blue) for you to try different switch types and enrich your typing experience. Additionally, the double-shot injection keycaps are fade-resistant and long-lasting. [26 Gorgeous Backlighting Effects] The 104 keys gaming keyboard offers 26 backlighting modes with RGB effects, providing over 16 million color combinations to personalize your keyboard's appearance. The lighting also has a memory function, you can quickly resume your preferred lighting mode when restart computer.