Lenovo ThinkVision E22-28. Display diagonal: 54.6 cm (21.5") , Display resolution: 1920 x 1080 pixels, HD type: Full HD, Display technology: LED, Response time: 6 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker (s) VESA mounting, Height adjustment. Product colour: Black