The keyboard has 30 types of lighting effects with white backlight, and the three buttons and large knob in the upper right corner of the keyboard have multimedia functions. (For details, see the description below) you can hold the knob 3 seconds to switch the backlit mode, and rotate it to adjust the lighting brightness.
backlight
Keychron Q6 Full Size Custom Mechanical Keyboard with Knob, Wired RGB Backlight QMK/VIA Programmable Macro, Hot Swappable Gateron G Pro Red Switch for Mac Windows Linux (Carbon Black)
Programmable Knob – With full QMK and VIA support, you can easily program and remap each key on the keyboard. You can easily customize the Q6’s knob to your desired key or macro commands such as: zooming in/out, adjusting screen brightness, brush size, volume, selecting video clips or photos, or backlight hue.
Govee LED Strip Lights & Light Bars with Camera, Smart Wi-Fi RGBIC DreamView T1 Pro LED Lights for TV (55-65 inches), Video & Music Sync TV Backlight for Gaming & Movies, Work with Alexa & Google Home
Double the DreamView Experience: This kit combines the LED TV backlights of our basic DreamView system with 2 smart light bars for even fuller reactive atmosphere lighting that takes any home theater or gaming setup to the next level.

