DIFANG HD 720P Ip camera Wireless Wifi Camera P2P H.264 Wireless Internet Camera Cctv Security Camera Home Security Camera Megapixel 1280*720 H.264 Intelligent Internet HD IP Camera Built-in Microphone, Speaker of High Quality, NightVision and 3.6mm Wide Angle Lens Storage Support, NVR Storage, Micro SD Storage Onvif 2.4. Good Compatibility with NVR and CMS from Other Company Compatible with b/g/n routers. Requires 2.4GHz band, you must connect your smartphone to the 2.4 Ghz network before syncing to the camera.