Product link: http://amzn.to/1WXQhIp
I been using this camera for about a month to film various footage while playing with RC quads and car. It boots up quickly and the 4k recording works well with no gripe. Other 4K unit tend to freeze up but this unit run strong even with 10+ min long of recording. I'm using a class 10 microSD card and it works well with no issue. IF you're using a slower card, it will complain and won't let you record in 4K. Did not get to test the water proof functionality as much as I
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