This kit is shipped with no HDD, so you may need to buy and install it by yourself, and it has SATA 3.0 cable inside, so you can easily connect and install the HDD.
Hard Disk Requirement: 3.5inch SATA port, Max 6TB capacity.
The wireless network camera can directly connect to the mobile phone through the WiFi hotspot method or connect to the Internet through the wireless router to realize remote monitoring of the mobile phone.