Features:Bright RGB lighting: Built-in multiple RGB effects and support customized dynamic lighting effects. More than 16 million lights are available.Full Keys Programmable: All buttons are programmable.Macro: One keystroke for all you want. Program custom macros or remap keys for an advanced gaming experience.Free Definition of FN Key Combination: Customized change plan, one-key macro setting, drive setting, lighting setting, key setting, preference setting as you want.Wired 2.4G BT three mode connection, C-type charging interface, wired mode can charge the keyboard.Blue Switch: Blue Switch can offer quicker and springier response, crisp click sound for spring Typing enjoyment, precise tactile feedback for ultimate Gaming performance.Red Switch: The red switch is quieter than the blue switch??The result is a feel that most perceive as smoother and faster making them especially popular among Gaming enthusiasts. Red Switch is the best fit switch using in Office.