The Best Dive Watches Under $500

What actually makes a dive watch

The word "diver" on a dial does not make a watch one. A real dive watch has to meet four conditions. First, water resistance of at least 100 metres, and ideally 200. Second, a screw-down crown that locks into the case and keeps water out. Third, a unidirectional rotating bezel, so that when you are timing a dive it cannot turn the wrong way and mislead you. Fourth, lume strong enough to read in the dark. For professional diving there is also the ISO 6425 standard; watches that meet it carry the word "diver's" on the dial and have passed pressure, magnetism and shock testing. Everything on the list below is a genuine 200-metre watch, not a 30 to 50 metre model dressed up to look the part.

Get your budget and case size right

The good news is that plenty of watches under $500 tick all of these boxes. The real decision is case size. For most wrists, 39 to 42 mm is the safe zone; dive watches are thick by nature, so rather than fixate on diameter, look at the lug-to-lug measurement, the distance that must not overhang the flat part of your wrist. A slimmer wrist suits the 39 to 40 mm Orient Mako 40, while a fuller wrist wears the 42 mm Kamasu better.

The best picks

Orient Mako-3, the mechanical value king

This is the heart of the list. For around $258, Orient gives you its own automatic calibre: the F6922, 22 jewels, 21,600 beats per hour, roughly 40 hours of power reserve, with both hand-winding and hacking. A genuine 200 metres, a 41.8 mm case and a screw-down crown. The only shortfalls are mineral glass rather than sapphire and lume that is not as bright as Seiko's. But finding another diver at this money with its own in-house calibre is close to impossible.

Orient Mako-3 41.8mm, Grey Dial Steel Bracelet

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For the full hands-on, see our Orient Mako-3 review.

Orient Kamasu, the sapphire-glass sibling

The Kamasu is really a member of the Mako family, but it arrives with one important upgrade: far more scratch-resistant sapphire glass, and usually better lume. The same F6922 calibre, the same genuine 200 metres, around $283. If you are going to wear it daily and knock it about, the few extra dollars for sapphire are the most sensible money you can spend over the long run.

Orient Kamasu 42mm, Black Dial

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Orient Ray II, the classic silhouette

The Ray is the plainer, dot-index sibling of the Mako. The same automatic calibre family, 41.5 mm, a genuine 200 metres, around $269. It is the right choice if you find the Mako's sharp indices a bit much and want a more classic diver's face.

Orient Ray II 42mm, Blue Dial

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Orient Mako 40, for slimmer wrists

The 39 mm version of the Mako. For anyone who finds 41 to 42 mm too big, it is the same 200-metre diver in a smaller, more comfortable case, around $260. It is one of the rare options that solves the problem of dive watches not sitting well on a slim wrist.

Orient Mako 40 39mm, Blue Dial

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Seiko Prospex, the step up to true ISO class

Look here if you want to move up a level. The Prospex is Seiko's serious dive line; for around $450 you get a fully credentialled 200 metres, tighter tolerances and Seiko's renowned LumiBrite glow. The Orients lead on value, but the Prospex edges ahead on night legibility and dive-class finish. If you are genuinely going to dive, or you simply want the best lume, the extra outlay is worth it here.

Seiko Prospex, Blue Dial Steel Bracelet

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Casio tough-solar, the unbreakable choice

If you do not want a mechanical movement, and you want a watch you can soak, take into the field and never give a second thought, Casio's square tough-solar model steps in. It charges by light, so there are no battery changes, sets itself by radio signal, takes 200 metres and is effectively unbreakable. Around $129. It will not give you the looks you expect from a diver, but it gives you absolute reliability.

Casio GWM5610 35mm, Black Dial Black Resin

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At a glance

Model	Movement	Case	Glass	Water resistance	Price (2026, ~)
Orient Mako-3	Automatic F6922	41.8 mm	Mineral	200 m	$258
Orient Kamasu	Automatic F6922	42 mm	Sapphire	200 m	$283
Orient Ray II	Automatic F6922	41.5 mm	Mineral	200 m	$269
Orient Mako 40	Automatic F6922	39 mm	Mineral	200 m	$260
Seiko Prospex	Automatic	Diver	Hard mineral	200 m	$450
Casio tough-solar	Solar quartz	35 mm	Mineral	200 m	$129

Prices are as of June 2026 and can change; check the product page for the current figure.

Mechanical or tough quartz

The choice really comes down to what you want from the watch. An automatic diver (Orient, Seiko) gives you the pleasure of winding and a mechanical connection; in return you accept a few seconds of drift a day and a service every few years. Casio tough-solar means zero maintenance and zero worry: no battery, no setting, nothing to break. If you are after the mechanical feel, start with Orient; if you want to use it like a tool and forget about it, the Casio will not let you down.

Care, what a dive watch needs

Unless you are buying a diver only to wear in the shower, the guaranteed water resistance depends on the integrity of the seals, and seals tire over time. If you are genuinely going to dive, have a periodic pressure (water resistance) test done; for swimming and everyday wear alone, you can go years without worrying. Make sure the crown is always screwed down and closed, because going into the water with an open crown is the most common mistake people make with these watches.

Which one should you buy

Need	Watch
Best mechanical value	Orient Mako-3
Sapphire glass, everyday durability	Orient Kamasu
Classic diver's face	Orient Ray II
Slimmer wrist	Orient Mako 40
True ISO class, best lume	Seiko Prospex
Zero maintenance, unbreakable	Casio tough-solar

Every one of these is a genuine 200-metre diver, and every one is a right answer. The only wrong move is to mistake a 30-metre watch for a diver and take it into the water.