ASUS Open Box R503C-RH31 15.6" Notebook PC - Black ASUS DuraBatt Technology regulates charging voltage and current to achieve longer battery life for the tasks at hand ASUS exclusive Super Hybrid Engine II with Instant On 2-second resume, double the standby time, automatic data backup and recovery, and longer battery life Superior built-in stereo speakers with bigger chamber and transducer for louder and crystal clear sound outputSpecifications Microsoft Windows 8 Intel Core i3-2350M 2.3GHz Processor