Capacitive non-contact method without chattering, ideal for high-speed input, ideal key touch and long life without getting tired even after long-term use "Type-S" key structure with excellent Bluetooth connection and USB connection (Type-C), key map change function, Speed (high-speed typing) and Silent (quietness). In addition, it is a keyboard with all the functions you can hope for, such as rational keyboard layout and 3-step tilt adjustment. * USB cable (Type-C) is not attached to this product. (Please use a commercially available USB cable.)