Orient Kamasu Review (2026): Is It Still the Best-Value Automatic Diver?

The Orient Kamasu has been the watch enthusiasts recommend first to anyone who wants a serious automatic without spending much. It arrived in 2019, and in 2026 the question is whether it still deserves that place. After going through Orient’s own specifications, six hands-on reviews and several years of owner reports, my answer is yes, with a few things you should know before you buy.

Orient Kamasu at a glance

Best overall automatic under $500

Orient Kamasu (RA-AA0003R)

• Sapphire crystal
• 200 m
• 41.8 mm
• Day-date

The red-dial Kamasu on the steel bracelet. Kamasu is the Japanese word for barracuda, and the pointed hands and markers are meant to look like its teeth. The same watch is sold with green, black and blue dials.

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Orient Kamasu specs

Kamasu, Mako III or Kamasu II? The names explained

The naming confuses almost everyone, so here is the short version.

Orient places this watch inside its long-running Mako family, and many shops list it as the Mako III. Kamasu is the name Orient USA uses and the one most buyers search for. Kamasu II is not an official name. Enthusiasts use it for the later versions with gradient dials and two-color bezels.

The case, the movement and the sapphire crystal are the same across all of them. What changes is the dial, the bezel color and the strap.

You will also see endings such as 19A, 19B or 39B after the reference. Retailers list those as alternative codes for the same watch, so don’t worry about them.

Case, size and fit on the wrist

On paper the Kamasu sounds large at 41.8 mm. In practice the number that matters is the 46.8 mm lug-to-lug, which is short for a dive-style watch, and the lugs curve down toward the wrist. Owners repeat the same line again and again: it wears like a 40 mm watch.

Here is how it has fit real wrists:

• 7.25 inch wrist (18.4 cm): the Orient Place reviewer said it fit well.
• 6.75 inch wrist (17.1 cm): Ben’s Watch Club called the size just right and weighed his at 154 g after sizing the bracelet.
• 6 inch wrist (15.2 cm): one buyer found it long on the bracelet, and fixed it by wearing it on a fabric strap.

My reading of those reports: from about 6.5 inches up you should be fine. Below that, look at Orient’s Mako 40, which uses a 39.9 mm case.

The finishing is simple and done well. The tops of the lugs are brushed and the case sides are polished. At 12.8 mm thick it slides under most shirt cuffs, though not under a tight dress cuff.

Dial and sapphire crystal

The dial is the reason many people choose the Kamasu over its cheaper siblings. The red version is a deep wine color with a sunburst finish that turns ruby in direct light. The hour markers are applied pieces, not printed, and the day and date sit in a framed window at 3 o’clock. One owner of the version sold in the United States notes that its day wheel shows English and Spanish.

The crystal is flat sapphire, which is very hard to scratch. This is the Kamasu’s biggest advantage. The Seiko 5 Sports uses Hardlex and the Orient Ray II and Mako II use mineral glass, and both will pick up marks sooner in daily wear.

There is one honest drawback. Ben’s Watch Club, after a year with the watch, found that the flat crystal reflects a lot of light and said better anti-reflective coating would improve it. If you spend a lot of time under bright sun or office lights, you will notice it.

Lume: reviewers disagree

This is the one area where the reviews don’t agree.

Two Broke Watch Snobs found the lume very bright and quick to charge, and said it holds its own against Seiko divers. Ben’s Watch Club was cooler: acceptable, better than most watches at this price, but not a winner against the best. A 2026 hands-on review of a gradient-dial version called it good but not excellent.

The fair summary is that the Kamasu’s lume is strong for the money and easy to read in a dark room or cinema, but it is not the brightest you can buy. If lume is your top priority, the Citizen Promaster Diver has the better reputation.

Bezel and crown: the known weak spot

The bezel turns one way only, in 120 clicks, and reviewers like its action: firm, little play, and well aligned. Two small notes. The edge can be hard to grip, especially with wet hands, and it can feel stiff when new. Ben’s Watch Club said his loosened up after a month or two.

The crown is the complaint you will read most. It is small, it is polished, and it sits between crown guards, so it can be awkward to screw back in. One reviewer uses his shirt for extra grip. The Orient Place reviewer also noticed a slight wobble when the crown is pulled out, and a few buyers on Drop reported crown failures.

Three habits avoid most of the trouble:

1. To close the crown, push it in gently and turn it clockwise. Never force it. If it doesn’t catch, back off and try again.
2. Make sure it is fully screwed down before the watch goes near water.
3. You won’t need the crown often. Once the watch is set and you wear it daily, it winds itself.

The F6922 movement and real-world accuracy

Inside is Orient’s own F6922, the same movement used in the Ray II and Mako II since 2016. It winds itself as you wear it, you can also wind it by hand, and the seconds hand stops when you pull the crown so you can set the time exactly.

Orient rates it at +25 to −15 seconds a day. Measured results from people who own one are better:

• Ben’s Watch Club: about +2 seconds a day after a year
• Orient Place: +5 seconds a day
• Owner reviews: +3 and +5 seconds a day reported
• One long-term owner: started well, then drifted to about +13 seconds a day after a year

So expect a few seconds a day, and don’t be surprised if it changes a little over time. A watchmaker can regulate it if it bothers you.

Two things to know as a first-time automatic owner. The power reserve is about 40 hours, so if you take it off on Friday night it will have stopped by Monday morning. And avoid changing the day or date when the hands are between 9 p.m. and 3 a.m., because the movement is changing the date itself during those hours. That is a common rule for mechanical watches with a calendar.

The bracelet, and the strap sizes that fit

The bracelet is where Orient saved money, and every reviewer says so.

The links are solid and fully brushed, which suits the watch. But the end links are hollow, the clasp is stamped steel, and several owners mention a light rattle. The clasp does have four fine-adjustment positions, a push-button release and a safety catch, and reviewers found it secure.

The good news is the 22 mm lug width. It is one of the most common sizes, so a rubber strap, a NATO or an aftermarket steel bracelet is easy to find and inexpensive. Several owners replaced the bracelet and were happier with the watch afterward. If you plan to do the same, the stock bracelet is still fine to wear while you decide.

Water resistance: can you swim and dive with it?

The Kamasu is rated to 200 m (20 bar), with a screw-down crown and a screw-down caseback. Swimming, snorkeling and a day at the beach are all within what it is built for.

It is not ISO 6425 certified. Orient states that plainly in its own materials, and Orient USA describes the rating as suitable for skin diving. That makes it a dive-style watch, not a certified diver’s instrument. For scuba, buy a certified watch.

I live in Panama, between two oceans, so one practical note: after salt water, rinse the watch in fresh water and turn the bezel a few times while you do. Salt and sand under the bezel are what make it stiff.

Orient Kamasu vs the alternatives

Orient Kamasu vs Ray II and Mako II. These three share the same movement, almost the same case and the same 200 m rating. The Kamasu adds the sapphire crystal and a more detailed dial. Two Broke Watch Snobs compared the Kamasu and Mako II side by side in 2026 and picked the Kamasu for anyone who will wear the watch hard. If you are careful with your watches and want to save money, the Ray II is a sound choice.

Orient Kamasu vs Seiko 5 Sports SRPD. The Seiko has the famous SKX shape, a see-through caseback and an enormous choice of parts for customizing. The Kamasu beats it on the things you can measure: sapphire instead of Hardlex, 200 m instead of 100 m, a screw-down crown instead of a push-pull one, and a tighter accuracy rating.

Orient Kamasu vs Citizen Promaster Diver. These are different kinds of watch. The Citizen is solar-powered and ISO certified, so it is the better tool. The Kamasu is mechanical, slimmer on the wrist and dressier. Choose the Citizen for diving and the Kamasu for everything else.

What is new for 2026

Two pieces of news matter if you are buying now.

• New colors. In August 2026 Orient brought the Kamasu design back in four new dial colors: blue, white, orange and a limited purple. The case and the F6922 movement are unchanged, which tells you Orient thinks the formula still works. Availability varies by country.
• Kamasu GMT. In October 2026 Orient launched a GMT version with a second time zone hand, a slightly larger 42.8 mm case, a new F6P22 movement and the same 200 m rating. If you travel or work across time zones, it is worth a look next to the Seiko 5 Sports GMT.

Neither replaces the watch reviewed here.

Orient Kamasu colors: red, green, black and blue

The four original colors are the same watch with a different dial and bezel. Pick the one you like; nothing else changes.

Green dial

Orient Kamasu Green (RA-AA0004E)

• Sapphire crystal
• 200 m
• 41.8 mm
• Day-date

The green is the version Ben’s Watch Club wore for a year. It is a dark pine green, and owners point out that it can look almost black indoors and only shows its color in good light.

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Black dial

Orient Kamasu Black (RA-AA0001B)

• Sapphire crystal
• 200 m
• 41.8 mm
• Day-date

The black is the safe choice. It has a black bezel, silver hands and a red seconds hand, and it goes with any strap you put on it. If this will be your only watch, it is the easiest one to wear with everything.

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Red (RA-AA0003R) is the one reviewed above: a deep wine red that turns ruby in the sun. Blue (RA-AA0002L) has a sunburst dial that moves between navy and almost black depending on the light, with a matching blue bezel. You can search for the blue Kamasu on Amazon.

Who should buy the Orient Kamasu

Buy it if:

• You want one automatic watch for work, weekends and the water
• You are hard on your watches and want a crystal that resists scratches
• You are buying your first mechanical watch and want strong specs without paying for a famous name

Skip it if:

• You scuba dive and need a certified watch: get the Citizen Promaster Diver
• You don’t want to reset a watch that has stopped: a solar or quartz watch suits you better
• Your wrist is under about 6.25 inches: look at the 39.9 mm Mako 40
• You mostly wear suits: the Orient Bambino 38mm fits under a cuff

Where to buy it, and the warranty

Orient’s list price is well above what the Kamasu usually sells for, so there is rarely a reason to pay full price. Amazon prices change often, which is why I link to the live price instead of printing one.

Before you order, check two things on the Amazon listing:

1. The seller. Orient’s warranty normally depends on buying from an authorized seller. The length of the warranty shown by sellers varies, so read what the listing says and keep your receipt.
2. The dial color. My link goes to the red dial. Confirm the color and the reference in your cart before paying.

Final verdict

The Orient Kamasu earns its reputation. No other watch I compared for the best automatic watches under $500 combines a sapphire crystal, 200 m of water resistance and an in-house movement in a case this easy to wear. Its flaws are real but small: learn the crown, and replace the bracelet one day if it bothers you. Seven years after it launched, it is still the automatic I would point a friend to first.

Sources

Specifications come from Orient. Opinions and measurements come from these hands-on reviews and owner reports:

• Orient Watch USA – Kamasu specifications
• Orient UK – Kamasu dimensions
• Orient – diver design series and F6922 accuracy
• Two Broke Watch Snobs – Orient Kamasu review
• Two Broke Watch Snobs – Orient Mako II vs Kamasu
• Ben’s Watch Club – Orient Kamasu review after a year
• Orient Place – Orient Kamasu hands-on review
• Deployant – Orient Mako III Kamasu dark green review
• The Slender Wrist – Orient Kamasu 2 pros and cons
• IZ Review – Orient Mako III (Kamasu) RA-AA0812L hands-on
• Europa Star – Orient Mako with sapphire and Arabic numerals
• WatchNation – Orient Autumn/Winter 2026: the Kamasu returns
• Gear Patrol – Orient Kamasu GMT debut