Screensize: 21" Input Connector: BNC & D-15pin, TTL: D-9 pin Video Input: RGB & TTL Horiz Scan Rate: 15.5-38.5Khz Vert Scan Rate: 50-90Hz Pixel Res: 1024x768 laced, 800x600 non-laced Dot pitch. .31 Medium persistence phosphor. This monitor is also re-badged as the commodore 21" FST.