Lenovo ThinkPad Yoga 12.5-Inch Convertible 2 in 1 Touchscreen Ultrabook (20CDS01J00) Black Intel Core i5-4200U 1.6 GHz Processor 4 GB DDR3 RAM 500 GB 5400 rpm Hard Drive, 16 GB Solid-State Drive 12.5-Inch Screen, Integrated Intel HD 4400 Graphics Windows 8.1, 8-hour battery life