【O3C OSU SayoDevice Keyboard】 This keyboard with 3 Hall magnetic linear switches, 1 wheel, 1 screen! TYPE-C, USB 2.0 high-speed 8000HZ. 【Replaceable Switches】 Supports all Hall magnetic switches, with a simple click for calibration. 【IPS Color Screen】 With 0.96 inch IPS color screen, 160*80 resolution, visible keyboard and key count. 【Custom Screen】 The first line of text on the screen can be customized, for example by typing your own ID. 【Custom Wheel】 The wheel can also be set to any key, for example to browse the song list. 【NOTE】 Sometimes the keyboard needs to be calibrated (the steps are shown in the figure) before being used for the first time or after a firmware upgrade. We strive to provide you with excellent customer service. No matter what problems you encounter, our professional team will do their best to solve them for you and ensure you have a pleasant shopping experience. Color 3 black keys