Screen Size: 65 inches Resolution: 3840 x 2160 (4K UHD) Touch Technology: Infrared (IR) Multi-Touch Points: Up to 40 simultaneous points Brightness: 400 cd/m² Contrast Ratio: 1,200:1 Response Time: 8ms (G-to-G) Touch Pen Type: Passive Pen Viewing Angle: 178° / 178° Speakers: Built-in 15W x 2 HDMI Inputs: 2 (1 rear, 1 front) USB Ports: 4 (2x USB 2.0, 2x USB 3.0)