Koolertron Single-Handed Macro Mechanical Keyboard, RGB LED Backlit Portable Mini One-Handed Mechanical Gaming Keypad 39 Fully Programmable Keys (39 Keyboard Black)

Unique Knob: The knob (turn left and right, press down) can be programmed. Left and right rotation can be infinitely rotated, can be set to ± volume, switch the previous/next song of music, reduce/increase light brightness, switch light mode, turn forward/backward pages, etc. All Keys Are Programmable: All keys are programmable, including two illuminated round buttons. Custom programmable key functions include regular 104 buttons, Web navigation buttons, multimedia shortcut keys, keyboard lock, Windows lock, etc. Each button can be set to any of these buttons. You can connect the keyboard (plug and play) and multiple keyboards to the same computer at the same time, and they will not interfere with each other. Macro Keys: There are 32 macro function buttons. Macro functions can be used in series, and delayed commands can be added to meet various complex usage scenarios, such as: Office, CAD/Ae/Pr/Ps shortcuts, various user accounts and passwords, game skills, programmers' basic code. For example, setting a button triggers a series of operations such as ""Ctrl + A 0.5s Ctrl + C 0.5s Ctrl + V"". 4-Layer Custom Configuration: Built-in MCU, after setting the keyboard keys, they can be stored in the keyboard's MCU without resetting the keyboard. 4 layers of configuration can be saved to handle multiple usage scenarios. Not only suitable for gamers, but also for many other types of users, including designers and video editors. Backlight: RGB color backlight, a variety of effects can be selected, brightness and saturation can be customized according to the user's desired color. Very clear and bright buttons, you can enjoy it in the dark night without lights, or you can turn it off by yourself. Hot Plug: supports hot plug and is equipped with a key cover puller, you can DIY various effects according to your needs. Mouse Function: Added mouse function, you can control cursor movement, click, and sliding functions through keys