Those cameras have been the jizz on the cycling community for a couple of years, I guess they're trying to branch off to other areas now.
If you're cycling with them, the locking mount is really crappy, vibrates way too much when mounted over the handlebar, and doesn't hold in place, to the point where the camera can even fall off to the ground. Not sure if they've addressed those issues at all on v3, I think not. And as egan says, the audio is only marginal.
Other companies have been getting into competing with them more recently with better quality stuff (with image stabilizers, padding, better locking mechanisms, etc).
Here's the first big promo vid from them, which I guess helped them become quite popular:
If you want to see the 'real' quality of any model, look for user uploads on YT.
*and yes, that is Ola on the vid at 00:42