About GoPro, what the others said, and way over priced. If you google "action cameras", you will come up with pages and pages of them. Also do a review of action cameras, there's a lot of reviews, pro's and con's and some list the top 10, etc. Some may claim 4K at 30 FPS(frames per second). That's borderline watching the old flickering 16mm movie projectors. The human eye "looses" the flickering around 24 FPS, at 30 it's still old technology. At 60 FPS it's very good, but you're back to 1080P or 720P, lower video quality. If you have a Henry's photo shop close by, drop in and see them. At $49, the one Alan posted would be fine for most people that aren't expecting a IMax theatre.