Viewsonic 21IN 25MM 1600X1200 87HZ. Display diagonal: 533.4 mm (21 "), Type: 21" (20.0" viewable) 90° deflection, Viewable size, vertical: 300 mm. Display resolution: 1600 x 1200 pixels. Operating relative humidity range: 5 - 95 %. Power consumption (typical): 115 W, Power source: AC 90-264V, 50/60 Hz (auto switch). Dimensions (WxDxH): 500 x 488 x 508 mm, Weight: 27 kg