Folio Flip Leather Wake/Sleep Smart Cover Case For Samsung Galaxy S4 Zoom SM-C1010 (with FREE screen protector) (Black) Features on auto sleep/wake-up function to preserve the life of the battery. Respond to calls and alarms without opening the cover Specifically-cut for access to all buttons and ports Create fashional and personality element Would let your phone have a special signal Interactive viewing window on the front cover allowing you to see important information on your phone without opening the case :Signal and Battery Status, Messages, Missed Calls, Time/Date, Current Music Details (if using Music Player)