ChutingStar: http://www.chutingstar.com
Sony is making their entrance into the action camera market with the appropriately named "Sony Action Cam". My friends over at ChutingStar loaned me one to try out and see how it stacks up. The Sony Action Cam comes in two models, one that is WiFi enabled and one that is not. I got to play with the WiFi enabled version.
I mounted the Sony Action Cam side-by-side with a GoPro Hero3 Black edition. They were mounted as close together as I could get them without each camera interfering with the view of the other. I videoed a couple of tandem skydives with both cameras and edited the footage in a side-by-side comparison with the GoPro footage on the right and the Sony Action Cam on the left.
You might notice that you can hear the tandem student screaming in freefall in the second video. The audio was picked up by the Sony camera but not the GoPro. I don't know why, they are both sealed inside waterproof housings, but the Sony seems to pick up audio when surrounded by extremely loud white noise.
ChutingStar: http://www.chutingstar.com