Anni 720P 4CH HD WiFi NVR Kit Wireless Security Camera CCTV Surveillance Systems,(4) 1.0MP Megapixel Weatherproof Wireless Bullet IP Cameras,65ft Night Vision,P2P,No Video Cable Needed,with 500GB HDD

These cameras once installed and working are really great, especially considering the price. I will say that you will be stuck trying to understand poor instructions that don't make much sense that may have been translated by Google translate if I had to guess. One of the most important things I can stress is....test your install and signal to the NVR BEFORE you install the cameras. If a very good signal is not picked up at the NVR (3 bars at least) your cameras will cut out and lag horribly or may not work at all. It does have a built in repeater function where you can connect one camera that is far away to one that is closer, however, you need to do this with all the cameras right next to the NVR, you cannot set up a repeater system if the signals aren't strong. ( i found this out after i had installed the cameras and power supplies, requiring me to remove all of it and set them up next to the NVR, then reinstall them back outside) after I did all of this, they do work quite well, The daytime color is crisp, the night vision b/w might even be clearer the daytime. So overall, i give them 3 stars, I would recommend them to someone I knew since I could help with the install and not make the mistakes I did. 1 more thing, format the hard drive first, before you add any cameras, it does not come formatted and will fail to format if ANY video is coming in from the cameras (they left that out too) also, the repeater function is only good for connecting up to 2 cameras from 1 other, if your 4th (like mine)also has a poor signal, your only option is to get an antenna extension as you cannot add a wifi extender to the NVR. The mobile app works great, i can view live footage from my android phone, computer, or fire tablet with very little delay. Feel free to message me if you would like some tips on installing these cameras.