70" Class (69-1/2” diagonal) Screen Size Brilliant Ultra-HD (3840 x 2160) LED Direct Lit Display 10-Point Multi-Touch Screen 350 cd/m2 Brightness; 4, 000:1 Contrast Ratio 3-Year Limited Warranty Built-In 10W per Channel Stereo Audio System Built-in SoC controller with Arm® Cortex® -A53 Processor (quad core) Built-in Whiteboard application Built-in Wireless LAN connectivity for wireless presentations** IR Touch Screen Technology OPS – Compliant Expansion Slot