Is a Dive Computer Worth the Money?
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Tables used to be how everyone dived. At this point, nearly all divers wear a dive computer and it makes sense.
The computer calculates depth, time, speed of ascent, and NDL in real time. Tables can't do that. When you go shallower partway through, the computer recalculates. Tables don't.
Wrist-mount computers are what most people buy these days. They're small enough, readable underwater, and you'll wear them as a watch between dives. Console-mount computers are available but fewer buyers go that way anymore.
Entry-level computers start around a few hundred dollars and cover everything most divers requires. They give you depth, time, NDL, a logbook, and usually an entry-level freediving mode. Stepping up to mid-range gets you transmitter compatibility, nicer readability, and additional nitrox compatibility.
Something people overlook is conservatism settings. Some algorithms are more cautious than others. A tighter algorithm means less no-deco time. Liberal algorithms give more time but at a thinner safety margin. Neither is wrong. view source It just what you're comfortable with and how experienced you are.
Check with someone at a dive shop who dives with a few different brands before buying. Staff will offer honest opinions on what works and what isn't just marketing. The better Cairns dive stores publish product guides and rundowns on their websites too
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