Genuine GoPro one from when I had the Hero2/3 so quite a few years old. Why do you ask ?what type of chesty you running fellah
I'm near 50yrs old (47), got many kilos of good food and beer padding me out so the chesty was usually useless as it wobbles with any body fat or developing man boobs... the Hypersmooth 2.0 is miles better than Hypersmooth.
The video from a few days back was regular Hypersmooth.
Mega impressed with Hypersmooth 2.0.