Slate 21 Pro 16GB Tablet - 21.5" - In-plane Switching (IPS) Technology) - NVIDIA - Tegra 4 T40S 1.66GHz - Black Screen Size: 21.5" Operating System: Android 4.3 Jelly Bean Processor: NVIDIA Tegra 4 quad-core 1.66 Ghz RAM: 2GB DDR3-800 MHz SDRAM Flash Memory: 16GB eMMC