Tri-mode Connection: This wireless mechanical keyboard with number pad supports 2.4GHz wireless, bluetooth 5.0 and USB wired mode connection. It can be connected to up to five devices at the same time. No limits about your keyboard connection to meet the needs of work, gaming, and study Roller Design: This full size mechanical keyboard with number pad has a multi-function metal knob that allows you to quickly adjust the volume, switch the connection mode, and turn the keyboard off/on Gasket Mount Mechanical Keyboard: This custom keyboard features built-in multiple sound absorbing layers, including IXPE switch dampener pad, 2 layers of thicker sound-absorbing foams, silicone dampener pad, which can effectively reduce the vibrate and noise of the keys, and provide creamy sound, natural and clear feedback, no more cavities noise RGB Backlit & Software Support: Choose from 18+ RGB backlight modes and seperate strip light, tailor your gameplay atmosphere to perfection. All keys support