Keychron K3 Pro Keyboard - Red Switches One of the best slim (Low Profile) keyboards on the market. 75% size Red switches Supports wired and Bluetooth connection (connects to multiple devices) and works on Windows and Mac. Fully customizable via QMK/VIA software, you can reprogram any key and create macros. RGB backlight. The keyboard is in excellent condition with no issues or remarks, used for less than a week. Installment payment is available through Wafi.