Used but in great condition. No problems!HDR1000: HDR1000 (High Dynamic Range) enhances dynamic contrast ratio, illuminating colors up to 50% brighter than SDR while displaying profoundly clear dark colors.QHD Resolution: Quad (QHD) resolution is aptly named for having four times more pixels (2560 × 1440) than HD and delivers a splash of transcendent color and piercing clarity.Multiple Ports: The DisplayPorts deliver up to 165Hz refresh rate, providing incredible visibility & agility to beat your standard player. All 3 HDMI ports and the USB-C port provide an impressive 144hz refresh rate.Ambient Light Sensor: With an ambient light sensor, the screen is readable in different environments. The ambient light sensor helps reduce eye strain by either increasing the screen brightness to compensate for bright sunlight near a window or dimming the screen for nighttime reading.Luminous Backcover Lights: A colorful LED light illuminates the back cover of the monitor, delivering a uniquely modern design.