NOTE: Model: A75 Pro. Please make sure you have the A75 Pro model and download the correct firmware.Installing the wrong firmware can cause hardware problems. If you have any issues, please contact DrunkDeer customer support.Self-Developed Web Driver - DrunkDeer Anlter: You can customize the key value and RGB backlight effect on the driver according to your needs or preferences. | Rapid Activate: Activateed once pressed, reset once released. Sensitivity range 0.1-3.6mm, adjustable accuracy is 0.1mm. Smoothly adjusts key action to allow mid-motion repeats without locking in actuation points. Players are free to customize it to their needs, giving them an edge in FPS and rhythm games such as Valorant, osu!. | Last Win Mode:When two keys are selected, the last keystroke is prioritized without having to release the previous one. For example, in games such as CS2 or Call of Duty, when you press the opposite arrow key, the last key you pressed takes precedence, making it easier for you to quickly change direction without releasing the first key and enjoying more of the game. | Release Dual-Activate Mode:2-in-1 Action Keys, each key can execute two distinct actions based on press and release. In CS2, you can set both forward and backward movement to a single key, allowing you to achieve perfect quick stops by simply pressing and releasing the same key. | Shock-Absorbing Tilt Legs: Patented shock-absorbing structure.Gasket-like structure cushioning effect, provides a unique feel and sound without affecting the internal space. | Polling Rate in HZ: 1000 ; Hall scanning rate - 8k. Ultra Response Speed: 10 times faster than the traditional mechanical keyboard.