Lenovo ThinkPad Yoga 20CD00BAUS 12.5-Inch Convertible 2 in 1 Touchscreen Ultrabook (1.6 GHz Intel Core i5-4200U Processor, 4GB DDR3, 500GB HDD, 16GB SSD, Windows 8.1) Grey 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 Convertible Touchscreen Display Windows 8.1; 6-Hour Battery Life