Apple iPad Air 2 UNLOCKED (16GB, Grey, Wi-Fi+4G) (Refurbished) This Certified Refurbished product is tested and certified to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon. 16GB iOS 8.1, upgradable to iOS 8.4 Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot Non-removable Li-Po battery (27.3 Wh)