Please Noted： 1. The camera and NVR are not wireless and require a power adapter for power supply. 12V 1A--Camera 12V 2A--NVR 2. You can connect the NVR to your TV/display using the HDMI cable. 3. The camera body is made of plastic. 4. A 500G hard drive has been installed in the NVR. 5. The NVR supports 10 channels and you can add an additional 6 cameras. Link for purchasing compatible cameras: https://www.ebay.com/itm/167895379255 If you have any questions about our products, please feel free to contact us at any time.