I have used the dome port with GoPro Hero 7 before so of course I bought it for my Hero 8 and it is a reliable dome port. I gave it 4 stars because it does exactly what it's supposed to do and is excellent value for money compared to some other domes on the market. I have used in salt water with no problems. I recommend that you make sure it's tightened well to prevent leaks and use anti-fog strips to prevent moisture or fogging. The pen works as a floating grip and can also be used with a waterproof case. The trigger handle can be a little tricky to use unless you lined up the knobs and screwed them in really tight, and it also covers the rear disc. So keep that in mind. I wish you could control the camera from the rear screen, but overall I'm very happy with this dome port. The one I had for the Hero 7 has held up well for the two years I've used it, so I expect this one to do the same. I will update my review if anything changes.
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