Acer S277HK wmidpp 27" wide IPS LED LCD. Maximum Resolution: 3840 x 2160 Dynamic Contrast Ratio: 100,000,000:1 Horizontal/Vertical Viewing Angles (typical): 178 /178 Integrated Speakers: 2 x 2.0W Signal Connectors: DVI-D (HDCP), HDMI, DisplayPort, Mini DisplayPort, speaker Brightness (typical): 300 cd/m2 Response Time (typical): 4ms gray-to-gray Power Adapter: External Tilt: -5 15