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SOLD
Let's face it, I don't want to watch myself going slower than I think I should be/am capable of.
This is a new unit, never used. The cardboard part of the packaging is a little fucked up at the corners because I cavemanned it when I opened it to a: see what was inside, and b: get the manual out to see if I was smart enough to use this wizardry. I'm not.
This is the chdhx-401 kit with a couple mounts and arms. It also says waterproof to 40m.
$350 no muss, no fuss.