A lazy question as i could read the wesbite,( but i more need someone holding my hand in these kind of things) but does it have the same style of lens as the other brand. Fish eye i think its called

Also i have seen so many different models. What is the best one for playing in surf, on Mountain bike and for skate boarding just general muking around with kids in tow

Also does it record sound like a normal video camera( if used out of water )

They also advertise a water proof model, but also advertise a wp Case as well?
Last one are there different mounts you can also get

Sorry.