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Viewsonic VP2768A-4K 27´´ 4K IPS LED 60Hz Monitor Black| Techinn
ViewSonic VP2785-4K, 27'' 4K Adobe RGB Monitor
ViewSonic ColorPro VP2786-4K: 27-inch professional monitor introduced with a 4K resolution, a 10-bit colour panel and 100% AdobeRGB colour space coverage - NotebookCheck.net News
ViewSonic VP2780-4K review: 27-inch, 4K monitor for professional imaging | ZDNET
Fstoppers Reviews the ViewSonic 2785-4K: One of the Most Affordable 27-Inch UHD Monitors With 99 Percent AdobeRGB Coverage | Fstoppers