Samsung Galaxy Tab 4 - 16GB (10.1-Inch, Black) (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Android 4.4 Kit Kat OS, 1.2 GHz quad-core Qualcomm processor 16 GB Flash Memory, 1.5 GB RAM Memory 10.1" WXGA Touchscreen Display (1280 x 800) 3MP rear camera, 1.3MP front camera, 802.11 a/b/g/n 2.4+5GHz, MicroSD capacity up to 64GB