Samsung SDS-P3040 4 Channel DVR Security System View from anywhere : Android, iPhone, iPad, Windows, Mac OS Built-in 500GB hard disk drive (SATA), H.264 compression for extended recording Multiple search option (Time, Event, Back up, Motion search), 600TV lines high resolution True Day & Night with ICR for perfect color reproduction, Night vision up to 50ft IP66 weather resistant outdoor ready, PTZ Supportable (PTZ Camera not included)