This sort of thing can just ruin the day for the competing crash cam companies out there. The wifi preview alone is pretty huge. For the price, it looks tough to beat.
Sony Action Cam hands-on – Engadget Galleries.
Audio and Video Tech from an AV Geek
The nice about this cam is the feature and hand carry cam. You can carry every where you go and record the memorable moments. But in terms of shooting a film, it will not give you the best result. It is good for your personal use only.