OSU Hot Swap Game Keyboards, 21 Keys Programmable Keyboard with Knob, One Handed Mechanical Gaming Keyboard Programming Macro RGB Backlit OSU Standard Keyboard for Game

21 KEYS PROGRAMMABLE: All keys are programmable. The programmable key functions including standard 104 buttons, web navigation buttons, multimedia shortcuts, keyboard lock, for Wins lock, etc. Each button can be set to any of these buttons. Fully compatible with for Black : for PC game.
WIDE APPLICATION: This one handed keyboard saves a lot of time. It can be used for programming to make a living, office work, gaming, music, media, industrial control, laboratory, production line testing, etc. It's a simple and quick way to control scenes without moving the mouse. You can use many keyboard shortcuts throughout the day and program each key as 1 key or a key combination macro.
RED SWITCH WITH KNOB: The portable keyboard comes with a unique knob, ideal for improving work efficiency and smooth gaming. The knob (left and right rotation, press) is also programmable. Left and right rotation is infinite and can be set to ± volume, switch previous, next music, decrease or increase light brightness, switch light mode, page forward or backward, etc.
PORTABLE AND SPACE SAVING: You can carry this professional and compact keyboard with you everywhere you go, which effectively saves desk space, making it ideal for other types of users such as gamers and video editors.
ERGONOMIC AND ACCURATE: With 21 programmable keys at your fingertips, you have the power to perform multiple functions effortlessly, increasing productivity whether you are at work or play. The ergonomic design ensures excellent feel and accuracy.