here is one of my first experience with this new little action cam
I stop at the old GoPro 4 aand new discover all new features with this new model.
Easy to use with great manual video settings possibilities this new version has a great stabilisation power at max 2.7 60fps.
you can go up to 4k60 fps but with out the "hypersmooth" stabilisation just the classi one with is ok but not great as the other hypersmooth one.
1080p 120 generate a special compressed file that is not compatible with all edit sofwear so be carfull when choosing your video settings.
I didit use any underwater case as it normaly goes up to 10 m down but still I found that water and salt can infiltrate in some part. I put some celar tape to secure those part but maybe the water proof case is a better choice if you realy want to protect it from a possible Failure with salt.
All that said it is from far my best ever action cam and even fun camera to brig in evry place you want to film with out a big thing in your hand. Perfect stabilisation gives you the possibilities to film handheld but using a little stick will help a bit better.
I used a Angulo Magnum 105 (65 w) / Ka Sail.race 7.1 2018 (great sail) with 430 100% mast KA / Hurrican fins SR7 36 soft
Bye .
Vincent