Koolertron Single-Handed Macro Mechanical Keyboard, Blue LED Backlight Portable Single-Handed Mechanical Gaming Keyboard 48 Fully Programmable Keys Red Axis

All 48 Keys are
Programmable: All keys are programmable. Custom programmable key functions include regular 104 buttons, Web navigation buttons, multimedia shortcuts, keyboard lock, Windows lock, etc. Each button can be set to any one of these buttons. You can connect both the keyboard (Plug and Play) and the 104-key keyboard to the same computer and they will not interfere with each other.
^^ Macro Keys: There are 16 buttons for advanced macro functions. Macro functions can be used in tandem and support up to 349 key commands. Delayed commands can be added for various complex use cases such as: Office, CAD/Ae/Pr/Ps shortcuts, various user accounts and passwords, game tricks, basic codes for programmers. For example, the Set button will trigger a series of actions such as "Ctrl + A 0.5 s Ctrl + C 0.5 s Ctrl + V".
^^ 4-Layer Custom Configuration: Built-in MCU that stores keyboard keys in the keyboard's MCU after they have been set up, without having to reset the keyboard or even change computers. Four layers of configurations can be saved to handle multiple use cases. Not only for gamers, but also for many other types of users, including designers and video editors.
^^ Backlight: Backlight brightness and saturation can be customized to the user's desired color. Very clear and bright buttons that you can enjoy on dark nights without lights, or turn off by yourself ^^
Mouse Function: new mouse function, you can control the cursor movement, click, slide function by button ^^
Key Combinations: You can set "shift+" "alt+" "ctl+" "win +" there are 36 key combinations for setting