I use them in my Canon g7xII at Fantasea. I love that I can see them change color. I pack two in my case and they usually last around 5-6 days of diving. However, if you spend a lot of time between dives, I had to throw away the remaining pouches after opening them, even though they were stored in the optional zip lock. I'm disappointed to see that the price has gone up so much since I first bought them in 2017. I used to pay $8.99 per pack.
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