Do You Need to Buy a Dive Computer?

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Tables used to be the only option. Now, the majority of divers use a personal dive computer and it makes sense.

A dive computer calculates your depth, time, speed of ascent, and no-decompression limits in the moment. Tables give you a static plan. If you move between depths mid-dive, it updates. Tables don't.

Watch-style computers are the most common use these days. These are small enough, easy to read, and you'll wear them as a regular watch between dives. Hose-mounted models are an option but less people choose them these days.

Budget computers start around $250-400 and do everything the average diver needs. Features include depth news tracking, time, NDL, dive logging, and often a basic freediving mode. Mid-range gets you transmitter compatibility, nicer readability, and additional mix options.

The one thing people don't think about is how the computer handles. Some algorithms are tighter than others. A cautious computer gives you less no-deco time. Looser algorithms extend time but with less safety margin. Both work. It just personal preference and how experienced you are.

Ask the staff at a local dive store who dives with multiple computers before buying. Staff will give you real-world feedback on what's good versus what's marketing. Most good dive stores have buying guides and honest reviews online too

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