After I bought this camera and used it for almost a week. I have to say I have already issued a refund. This is mainly because the sound reproduction of this camera is not very good. It's very similar to the sound you hear from your phone's speaker if you accidentally drop it in water. It doesn't just sound like that when I'm playing from the camera itself. It sounds the same when I play it from my computer, with and without the microphone. Now I'm not sure if the camera I got is exactly like it because it has so many positive reviews. But my experience is not great. However, the image quality is really good, albeit at a price. I'm not 100% sure how plausible 2.7k and 1080p is, but it's good enough for almost everyone. Overall, I just decided that I should just buy a famous brand camera instead of buying a Chinese brand camera.