?Colorfull Rainbow RGB Backlit?: 5 LED light up modes, 8 color variations, static and dynamic lighting. BENGOO USB keyboard is equipped with adjustable light speed (streamer and breathing light mode) easily control by the knob. You can adjust the lighting atmosphere according to your preferences. In addition, if the keyboard is not operated for 10 minutes, the backlight will automatically turn off and press any key to wake up for saving power and extending backlight life. ?89 Keys High-Quality Keyboard?: The 89-key keypad design retains the right numeric key operation area, which is more suitable for your usage habits. 25 keys non-conflict and non-slip design ensure the fluency of use. The surrounding keyboard design and ABS fuel injection keycaps ensure the durability of the keyboard. ?Multi-Function Knob & Multimedia Keys ?: The knob function of this keyboard is quite unique. It can adjust the volume and backlight conveniently. Fn+Knob: When volume indicator lights up, rotate the knob to adjust the volume+ and volume-. When lighting indicator lights up, press the knob to change the modes and colors of backlit. Rotating for lighting speed adjusting. Moreover, the combination of FN key and different keys can achieve 12 kinds of multimedia operations. ?High Comfort and Adaptability?: BENGOO gaming keyboard is ergonomically designed. The 20° overall tilt key surface fits the hand usage habits, two height adjustments, for efficient work and better user experience. The bottom is equipped with a non-slip pad to ensure that it will not slip during use. ?Mechanical Feeling?: BENGOO RGB Keyboard has excellent use feeling as its highlight. The 60±15g actuation force and the bounce time of 5ms give a similar feel to a mechanical keyboard. It can provide high precision and faster response speed, and provide a pleasant click sound during the game.