The Main Features of the NVR 4 Channel Kit are
1. HD 3.0MP Resolution; not support Onvif!
2. Cameras are built-in Microphone and Speaker, support real time Two-Way Audio;
playback video from HDD with sounds; listen from APP with sounds.
4. Wireless WiFi / Lan Cable connection between NVR and Cameras;
5. Metal shell housing waterproof ip camera can be used for indoor/outdoor;
6. Plug and play,remotely view by Android & iOS System (Smartphone,Pad,Tablet,PC);
7. 3 meters long power adpter for every camera;
8. IR-Cut night vision : up to 10-30m Night Vision Distance;
NVR 4 Channel Kit
9. Motion Detection+Email Alert+APP Push
10. NVR upgrates to H.265 encode: save your HDD storage space;
11. Support multi-languages: English,Russian,French,Spanish,etc;
checkout another HD camera here https://vsonicdistributions.com/product/wifi-bulb-camera/