Annke 4K Uhd Indoor Security Camera, Crater Reno 8Mp Smart 2.4/5 Ghz Wifi Camera Marvellous 4K Full HD Crisp: Equipped with 1/3" Progressive Scan CMOS, Crater Por delivers vivid videos with finer details in the resolution of 3840*2160 (8 Megapixels), which not only brings wider vision than 1080p but 4 times crisp image quality. Stable Dual Band, Simple Plug Play: The 2.4 GHz/5 GHz dual-band Wi-Fi connection, provides stable WiFi/network signal and helps you free from other signal interference. True Plug and Play, just needs to connect with the WiFi router instead of network cables, easy to install. Crystal-Clear 2-Way Audio: With built-in mic and speaker, the camera delivers images and transfers voice, real-time communication is much clearer. Via the ANNKE Smart app, you can talk to your family/baby/pet freely anytime, anywhere. Auto Tracking Alert/Notification Pushes: This motion detection feature looks at anyone in the camera's field of view and follows them, capturing a complete video recording of their activities. Meanwhile, once detect suspicious movements and abnormal sounds, you will receive prompt notifications and alerts. Local HDD Storage Cloud Storage Support: Inspection videos can be stored on local HDD/cloud storage, both are at no risk of being hacked. Also, the built-in SD card slot can maximize up to 128GB(not included), never miss any funny moments. Please note that cloud storage needs charges.