Im so pleased to the total performance and quality of yhis CctV system , aside from having a pre-installed 1tb hdd. Very easy to install and no hassle of following its user manual. Comes with its all accessories needed for use. Its compatible to any adroid gadget for monitoring so It didn’t need for me to buy anything like a TV or PC for monitoring as I just connect them to our old WiFi TV . Working excellent and the quality of videos taken from the cameras are trully clear and high definition , indeed. Im so pleased and i highly recommended this to everyone when it comes to buying a sets of cameras as its worth the money. Superb , 5 stars rating for a very good quality product.