I haven't tested it underwater and in hot/cold conditions yet, but in general, the camera is good, I think all the shortcomings should be fixed in the ates.
Sena GP10-02 Waterproof Bluetooth Pack for GoPro, Black
9 Review
Waterproof Case for DSLR Cameras: DiCAPac WP-S10 Pro Series
9 Review
Enhanced TrustFire DF30 150° Diving Photography Video Flashlight – 2350 Lumens Underwater Camera Dive Light with Rechargeable 32650 Battery
10 Review
Photo camera Canon PowerShot G9 X Mark II, black
35 Review