19 Key Programmable Keypad: All keys are programmable. Custom programmable key functions include regular 104 buttons, Web navigation buttons, multimedia shortcuts, keyboard lock, lock, etc. Each button can be set to any one of these buttons. You can connect the keyboard (plug and play) and multiple keyboards to the same computer at the same time and they not interfere with each other. Wide/Wireless Applications: This one handed keyboard is a huge time saver, you can do programming for a living, for , for play gaming, for music, media, industrial control, laboratory, production line testing and other fields. It is easy and quick way to control scenes without needing to move a mouse around. You can use a lot of keyboard shortcuts all day, and you can program each key to be 1 key or a macro of key combinations. One Handed Mini Keypad with Knob: Nice quality. Small and portable mini keyboard with knob is perfect for making work faster, plays games smoothly etc. Rotate left and right can be infinitely rotated, set to ± volume, The buttons below the volume wheel can adjust the previous and next music tracks on the left and right sides respectively, and the bottom button is used to control the pause and playback of music. you can carry it with you, effectively saving desktop space. Mouse Function: The numeric keypad is equipped with a type of mouse function, including a game joystick (which allows the computer cursor to move) and a scroll wheel (which allows the computer's game screen or office software page to move up and down),Just need a W911 numeric keypad to go out without carrying a mouse. Color:B:Black Material:plastic Package Contents: 1 * Wireless Mechanical Keyboard 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.