Lenovo ThinkPad Yoga 12.5-Inch Convertible 2 in 1 Touchscreen Ultrabook (20CD00B4US) Grey Intel Core i5-4200U 1.6 GHz Processor 4 GB DDR3 RAM 128 GB Solid-State Drive 12.5-Inch Convertible Touchscreen Display Windows 8.1; 6-Hour Battery Life