COMFORTABLE & ERGONOMIC DESIGN: The stepped keycaps and two-step legs provide a comfortable typing angle and reduce wrist stress. The keyboard has a double layer of sound deadening construction with an EVA interlayer foam and bottom foam to reduce noise from the keyboard's internal cavities. The keycap color scheme is simple - black & white, with an additional 16 red keycaps available for DIY. 2-IN-1 MULTIFUNCTIONAL KNOB: The knob controls the audio / backlight, long press to switch between them. When the keyboard is in audio mode ( by default ), the indicator M is not lit, turn left and right to adjust the volume, press the knob to pause or play. When the keyboard is in backlight mode, indicator M lights up, turn left and right to adjust the light brightness, press it to switch light effects. LINEAR YELLOW SWITCHES: Excellent performance with an expected lifespan of 50 million times. Yellow switches are sensitive to trigger, less audible and require less force to press, making it smoother to use. 100% anti-ghosting, each keystroke is correctly detected even if you press many keys on the keyboard. AMAZING LIGHTING EFFECTS: This 75% keyboard has ice blue backlighting, supports 18 lighting modes, 5 brightness levels, 4 speed levels, and can also be turned off or on with one click. Dynamic or static lighting modes are available, so you can choose the lighting effect that appeals to you as required. 75% COMPACT MECHANICAL KEYBOARD: With a total of 83 keys, the STAR75 gaming keyboard retains separate arrow keys, making the desktop cleaner without sacrificing essential functionality. It can perform the commands of a full-size keyboard with more space for mouse movement. A great addition to the desktop for gamers and office users.