Apple watch ultra ocean band extension

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Does anyone have the ocean band extension and can help measure the length of it? Need to wear it over a drysuit and not sure if the extension is long enough. My current dive computer strap measures at 2.5 inches for the shorter half and 9.5 inches for the longer half.
I have one. You only get a replacement for the longer half. It's 9.75" long with punched holes along most of its length
The shorter half stays the same: 3" of rubber (not counting the Ti buckle loop)

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