Redragon Ucal Pro K673 65% Wired 2.4Ghz Bluetooth Mechanical Keyboard Vintage Blue (Linear Red Switch)FeatureREDRAGON GASKET OUT: The housing structure differs from conventional screw fixings by using precisely sealed covers with gaskets to aid noise reduction and flexibility. It provides even feedback, while the vertical padding reduces rigid noise and delivers a clear, clean and softer typing experience.3-mode connection: equipped with the advanced Redragon tri-mode connection technology, USB-C wired, BT 3.0/5.0 and 2.4 GHz wireless modes, which take the user experience to a new level in all areas.ON-Button Control: Equipped with a convenient, easily accessible control button that allows you to easily control the keyboard backlight and media (volume, play/pause, change). Additionally functional without additional buttons or wasted space.NOISE ABSORPTION X 2:Equipped with two 3.5mm noise dampening foam located between the PCB, along with the silicone gasket. Reduces sound resonance between metals and significantly reduces cavity noise. Produces a clear and pure switch sound, without any extra mushy noise.81-Key Layout The innovative design maintains the length of the original 65% layout that cuts out the number field for more space for mouse movement. At the same time, the upper function button row is added, which is important for many users. No more FN combination keys, compact and more practical.