Voice-Activated Gorgeous RGB Backlight Effects】 The R66 comes preloaded with up to 16.8 million amazing RGB backlight effect combinations. You can change the color by pressing FN+BACK. FN+DEL changes the RGB effect. Press FN+Arrow Keys to easily control the light brightness and speed. Press FN+ SPACE bar to enter Sound Rhythm Mode, which has three effects and the lights will move with the rhythm of the surrounding music. In addition, the keyboard adds flanking lights to create a cool gaming atmosphere and create a passionate personalized keyboard.

【Sixfold Top-Mounting - Combining the best of top and gasket structure】Using the Sixfold Top-mounting design. The plate and PCB is firmly fixed to the case. The multi-layer shim construction fills the keyboard's internal voids to eliminate switches knock and cavity sounds.This design maintains the advantages of the top structure's even feel and switiches sound reproduction, while taking into account the gasket structure's certain soft-bounce feel and noise-removal effect.Offers a superior tactile consistency, firm feeling, and better noice reducing. Every keystroke is both cushioned and precise.

【65% 66-Key Mechanical Gaming Keyboard with Knobs】65% 66-Key Mechanical Gaming Keyboard with Knob】The layout of R66 eliminates the Number area and F area, which is convenient for daily use and enhances typing comfort, and saves space to make room for the mouse, the metal knob allows for quick volume adjustments, press to turn off the sound, long press and then rotate to adjust the brightness, press to turn on the keyboard lights.