Here is the summary of key features of the new GoPro HERO versus HERO6 and HERO5
Is a GoPro HERO 5 waterproof without a waterproof housing? Yes, make sure the USB door is closed. Both HERO5 Black and HERO5 Session designed to be waterproof up to 10m (33ft) without a housing.
Does GoPro WiFi work underwater? Have you ever wonder why GoPro wifi signal lost during underwater activity? Try to control via smart remote but failed? If you're like me, you assumed that the GoPro WiFi works underwater. But it doesn't.