Multi-Device Connection: The F99 wireless mechanical keyboard supports triple connectivityBT 5.0, 2.4GHz wireless, and USB-C wired. It pairs with up to five devices simultaneously, allowing seamless switching between them with simple FN shortcut keys. Enjoy ultimate flexibility for work, gaming, and study Hot-Swappable Custom Keyboard: The F99 mechanical keyboard allows you to freely replace switches and keycaps (tools included). Its hot-swappable PCB supports easy, solder-free replacement of both 3-pin and 5-pin switches. Equipped with factory-pre-lubed linear switches, this computer keyboard provides a smooth typing feel, fast response, and pleasant creamy mechanical sound, making it an excellent choice for office and games Gasket-Structure and PCB Single Key Slotting: This computer keyboard features a advanced structure, extended integrated silicone pad, and PCB single key slotting, better optimizes resilience and stability, making the hand feel softer and more elastic. F