The Apple iPad Wifi was announced in 2010, January. Released 2010, March With 9.7 inches, 291.4 cm2 (~63.3% screen-to-body ratio) IPS LCD, Powered by Apple A4 (45 nm) and running iOS 4, upgradable to iOS 5.1.1, the device delivered smooth performance and multitasking capabilities. while the Non-removable Li-Po 6600 mAh battery (24.8 Wh) ensured long-lasting usage.