1. [ (Replaceable Switches) ] Supports any Hall magnetic Switches, with a simple click for calibration. 2. [ (IPS color Screen) ] With 0.96 inch IPS color screen, visible key range and button counting. 3. [ (Custom Screen) ] The first line of text on the screen can be customized, such as writing your own ID. 4. [ (Custom Knob) ] The knob can also be set with any key, such as to scroll through the song list. 5. [ (O3C OSU SayoDevice Keyboard) ] This keyboard with 3 magnetic linear switches, 1 knob, 1 screen! TYPE-C, USB 2.0 high-speed 8000HZ.