Macro Keypad's all keys are programmable. Custom programmable key functions include regular 104 buttons, Web navigation buttons, multimedia shortcuts, Scroll Lock, Windows lock, PrtSc SysRq, etc. Each button can be set to any one of these buttons. mini keypad with macro knobs is perfect for making work faster, plays games smoothly etc. The knobs (Rotate Left/Right, Press Down) is programmable, also can be rotated steplessly (Enter Up To 18-Characters at Once). You can set it as desired to VOLUME+/-, PREVIOUS/NEXT, DECREASE/INCREASE, TURN PAGES FORWARD /BACKWARD etc. KeyPad's macro functions can be used in tandem and can support up to 349 key commands. Delayed commands can be added to meet various complex use cases such as: Office, CAD/Ae/Pr/Ps shortcuts, various user accounts and passwords, game tricks, basic codes for programmers. Equipped with LAYER SWITCHING BUTTONG , you can be easily saved to handle multiple use cases, which can greatly improve the efficiency of working. Besides, it's also a great game booster. Support On-board Storage, after setting the keyboard keys, keyboard will automatically memorize the key functions and switch between using the device at will. Keyboard customization settings need to be done in Windows system while plugged in. (USB-A to USB-C cable is included in the package). Color: Black Material: ABS Package Contents: 1* four-key keyboard 1* data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.