It is advertised as 4k but is definitely not, even at standard 1080 HD the quality is poor. It says that it does 4k at 30fps but it is a very poor picture compared even to my cheap phones camera. You have to hold it very still at that frame rate and the picture is not HD quality.
I regret buying this. Also the camera says it is taking 16meg photos but they look closer to 2meg in quality.
Service was ok.