No, it's not 4K, but it's not even FHD! The installation is a bit strange, especially when I scanned the QR code. It took me to a website and asked for a subscription. Do not send "OK" to the SMS. You will automatically be charged for the subscription. Then I did a manual search and found the app on the Play Store, so things were much smoother after that. Now, it has a big advantage of being able to move the camera from the phone (right-left and up-down). It takes a microSD card, which makes storage of the recordings much easier. Otherwise, you have to subscribe to the cloud. On the other hand, when it started recording, I noticed that the image quality is quite poor. Mobile phones from 2010 record much clearer images and videos. So, the description of it being 4K is completely inaccurate. A little baby monitor camera I had has the same or even slightly better clarity. Of course, I didn't expect anything better for €28! So, for something of better quality, I definitely have to spend a lot more.