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What do you use for a backup bottom timer?
I have been using my watch as a backup bottom timer, but was wondering what others do? Is there a better option? Does anyone use a dedicated bottom timer?
The popular Uwatec costs almost as much as a basic entry level computer, does less, and you can't change the batteries, so why buy one? It makes more sense to get a cheap backup computer, especially if you can find one with gauge mode.
Thoughts?
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