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I'm really puzzled by the 30 min part, things either seal or they don't. I wonder if it's a genuine limitation or just another one of those standards where devi

I'm really puzzled by the 30 min part, things either seal or they don't. I wonder if it's a genuine limitation or just another one of those standards where devices are tested for 1 hour at 1 meter depth and that's what they advertise.

huytersd 3y ago
They have those on watches too. Water proof for 1 hour at 200m or whatever.