27 I swear to God, we bought it from Noon and it was good and lasted with me, but the reason for selling it is that the phone fell on it and caused a small crack and it no longer works. "The screen only needs repair." I have no desire to pay for repairs and I tried to put everything related to the screen correctly and clearly. Screen Size (in inches): 27 inches Refresh Rate: 144Hz Connectivity: HDMI Resolution: Full HD Type: Monitor