This item contains a fully functioning camera, two power supplies, and a flakey monitor (the item has been priced as if only the camera and power supply are included, so the monitor is effectively free). The camera can be used via Wi-Fi with the BT connect app, I.e using a smartphone as the monitor. The monitor does work but the connection between it and the power supply is poor so it is difficult to charge/power the unit. The items come in the original box with the instruction manual.
eBay