Used for about 3 months. Checked by an amateur, and there are no operational problems. I removed the keycaps once for cleaning. Included: Type-C cable for connection, 3 key switches Astonishing 8000Hz response speed and ultimate precision pursued in 0.1mm increments. Rapid trigger and an actuation point of 0.1mm provide a customized feel that responds instantly to the slightest movements of your fingertips. A new standard for all gamers. Experience the best moments, instantly. Connection type: Wired Keyboard layout: English