Optoma 5652RK+ Interactive Flat Panel to Use In Meeting Room and Class Room, 65 Inch 4K UHD (3840 x 2160) Resolution 40 Touch Display with 400 nits Brightness and 7000:1 Contrast Ratio, 50000 Hours Panel Life time with 7H Zero-Bonding 3.2 mm Thickness Tempered Glass Flicker-Free and Low Blue Light Screens 2xTouch Interface 1xVGA Input 3xHDMI Input 1xHDMI Output 5xUSB Port for Player 1xUSB Type-C Port 1xAudio In 1xAudio Out 1xSPDIF 1xRS232 Input 1xRJ45 Port 2xStylus with 40 watt Internal Loud Speaker, 3 Yr Warranty