Lenovo ThinkPad Yoga  12.5-Inch Convertible 2 in 1 Touchscreen Ultrabook (20CD00AVUS) Intel Core i5-4300U 2.9 GHz Processor 4 GB DDR3 RAM 180 GB Solid-State Drive 12.5-Inch Screen, Integrated Windows 8.1 Professional, 7-hour battery life