Hamilton Khaki Navy Scuba Guide 2026: Auto vs GMT vs Quartz — Which Hamilton Dive Watch Should You Buy?

The Hamilton Khaki Field gets most of the attention, but if you live anywhere near the water, the watch you probably want is its ocean-going sibling: the Hamilton Khaki Navy Scuba. It is one of the best-value Swiss dive watch families on the market right now. It has an 80-hour automatic movement in the 40mm and 43mm models, a true 24-hour GMT complication in the travel versions, sapphire crystals across the board, and prices that start well under $1,000.

The problem is that the Navy Scuba line has quietly grown into a confusing mix of sizes, movements, water-resistance ratings and bezel types. Is the 40mm Auto enough of a dive watch, or do you need the 300m 43mm? Is the GMT worth the extra $550? And where does the 37mm quartz fit in? This guide answers all of it. We cover every Khaki Navy Scuba reference we currently carry at Lexor Miami, explain the specs in plain English, and finish with honest recommendations for different wrists, budgets and lifestyles.

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Quick Answer: Which Khaki Navy Scuba Should You Buy?

• Best overall for most people: Khaki Navy Scuba Auto 40mm, black wave dial on bracelet (H82415130, $975). It's sized right for most wrists, has the 80-hour H-10 movement, and works as a weekend dive watch and an everyday watch.
• Best for serious water use: Khaki Navy Scuba Auto 43mm, green (H82525160, $1,225). It's rated to 300m and has a ceramic bezel, a bigger presence and a gradient green dial.
• Best for travelers: Khaki Navy Scuba Auto GMT 43mm, blue (H82535140, $1,525). It has a 24-hour bezel, a red GMT hand and the H-14 automatic, so it tracks a second time zone.
• Best "dive watch you can still dive with" GMT: Khaki Navy Scuba Automatic GMT 43mm, white (H82555150, $1,525). It has a GMT movement with a conventional 60-minute dive bezel.
• Best summer and beach watch: Khaki Navy Scuba 40mm with the turquoise-accented dial on rubber (H82415331, $975).
• Best classic black diver: Khaki Navy Scuba Auto 40mm with date (H82315131, $975).
• Best for smaller wrists, or for anyone who wants grab-and-go simplicity: Khaki Navy Scuba Quartz 37mm, white (H82221310, $825).

Hamilton Khaki Navy Scuba at a Glance

Model	Reference	Size	Movement	Water Resistance	Bezel	Price
Scuba Quartz 37 (white)	H82221310	37mm x 10.77mm	Swiss quartz	100m	Ceramic, 60-minute	$825
Scuba Auto 40 (black, date)	H82315131	40mm x 12.95mm	H-10 automatic, 80h	100m	60-minute, unidirectional	$975
Scuba Auto 40 (black wave, bracelet)	H82415130	40mm x 12.95mm	H-10 automatic, 80h	100m	60-minute, unidirectional	$975
Scuba Auto 40 (turquoise accents, rubber)	H82415331	40mm x 12.95mm	H-10 automatic, 80h	100m	60-minute, unidirectional	$975
Scuba Auto 43 (green gradient)	H82525160	43mm x 12.58mm	H-10 automatic, 80h	300m	Ceramic, 60-minute	$1,225
Scuba Auto GMT 43 (blue)	H82535140	43mm x 13.9mm	H-14 automatic GMT, 80h	300m	Ceramic, 24-hour	$1,525
Scuba Automatic GMT 43 (white)	H82555150	43mm x 13.9mm	H-14 automatic GMT	300m	60-minute dive	$1,525

Prices reflect Lexor Miami's listed prices at the time of writing and may change. Availability on Hamilton divers moves fast, especially for the GMT models, so check each product page or contact us for live stock.

A Short History: Why Hamilton Makes Dive Watches at All

Hamilton was founded in 1892 in Lancaster, Pennsylvania. For its first half-century it was an American company through and through, building railroad pocket watches when accurate timekeeping literally kept trains from colliding. That reputation for precision under pressure brought Hamilton into military work. During World War II the company stopped civilian watch production in 1942 and devoted itself to the war effort, supplying more than a million watches to American forces. It also built marine chronometers for the U.S. Navy, the instruments ships used to calculate longitude at sea.

That naval connection is the real root of the Khaki Navy collection. Hamilton also built dive watches for U.S. Navy divers in the mid-twentieth century; the best known is the Frogman, which Hamilton still cites as the foundation of its modern dive line. Today Hamilton is Swiss, headquartered in Biel/Bienne and part of the Swatch Group, but it still leans into that American military and maritime story. Think of the Khaki Field as the Army watch and the Khaki Navy as the Navy watch.

The modern Khaki Navy Scuba is the mainstream, everyday-diver branch of that family. It sits below the 1,000m Khaki Navy BelowZero, a heavy-duty professional-grade diver, and alongside the vintage-inspired Khaki Navy Pioneer and Frogman models. Hamilton has refreshed the Scuba repeatedly. Over the last few years it has gained a larger 43mm, 300m version, ceramic bezels on the bigger models, GMT versions, and in 2026 a new stamped, lacquered wave-texture dial on the 40mm Auto.

If you want the bigger picture of the brand first, read our complete guide to the best Hamilton watches in 2026 and our page on buying Hamilton watches in Miami.

What Makes a Watch a "Real" Dive Watch?

Before you compare models, it helps to know what you're actually comparing. People call a lot of watches "dive watches" because they have a rotating bezel. The functional standard is stricter. The international standard for diver's watches, ISO 6425, sets requirements like these:

• At least 100 meters of water resistance.
• A unidirectional rotating bezel, or an equivalent way to time a dive. It turns only counter-clockwise, so an accidental bump can only make it look like you've been down longer, never shorter. That's the safe direction to be wrong.
• Legibility in the dark, meaning luminous hands, markers and a bezel pip readable at a set distance in darkness.
• A clear indication the watch is running, typically a lumed seconds hand.
• Resistance to magnetism, shock and saltwater, plus a secure strap or bracelet.

The Khaki Navy Scuba models are built around this dive-watch formula: 100m or 300m of water resistance, screw-down crowns, luminous hands and indices, and sapphire crystals. All the 40mm models and the 43mm green have a unidirectional 60-minute bezel. The blue GMT swaps that for a 24-hour scale, so it's a traveler's watch first and a dive timer second (more on that below).

100m vs 300m: does it matter?

Here's the honest version. A 100m rating (10 bar) is plenty for swimming, snorkeling, beach days, boating, showering and recreational scuba within normal sport-diving limits. The pressure rating is a lab test, not a depth you should plan around, and most recreational divers never go below 30–40 meters. Where 300m (30 bar) helps is margin. You get more robust gaskets, a thicker caseback and crystal, and more tolerance for the real-world abuse that actually kills watch seals: jumping off a boat, hot tubs, rapid temperature changes, and years between gasket services.

If you're a weekend snorkeler, 100m is fine. If you dive regularly, spearfish, surf hard or simply want the toughest version, the 300m 43mm models are worth the upgrade.

The Movements: H-10, H-14 and Quartz Explained

Hamilton H-10 automatic (40mm and 43mm Scuba Auto)

The H-10 is Hamilton's exclusive version of the Swatch Group's Powermatic 80 architecture, and it's the heart of most of the Scuba line. The headline number is the 80-hour power reserve. Take the watch off Friday evening and it will still be running Monday morning. That's more than double the roughly 38–42 hours of many traditional automatic movements at this price. The H-10 also uses a Nivachron balance spring, an alloy designed to resist magnetism and temperature swings. That matters more than you'd think in a world full of phones, laptops, speakers and magnetic bag clasps.

It's a self-winding movement. Wearing it winds the mainspring through a rotor, and you can also hand-wind it through the crown. Like all mechanical watches, it's accurate to seconds per day rather than seconds per month, so expect to reset it occasionally.

Hamilton H-14 automatic GMT (Scuba GMT 43mm)

The H-14 is built on the same 80-hour family but adds a GMT complication: a fourth hand that circles the dial once every 24 hours and points to a 24-hour scale. On the Scuba GMT it's red, which makes it easy to pick out. You set it to a second time zone, usually home time or UTC, and read it against the bezel. Both GMT models also have a date window.

Swiss quartz (Scuba Quartz 37mm)

The 37mm Scuba runs on a Swiss quartz movement. That means battery power, accuracy measured in seconds per month, no winding, and a thinner case: just 10.77mm on the H82221310. It's the practical choice if you rotate several watches and don't want to reset an automatic every time you pick it up, or if you simply prefer a slimmer watch. For a deeper dive into the trade-offs, see our explainer on automatic vs quartz watches on the Lexor Miami blog.

Every Hamilton Khaki Navy Scuba Model, Reviewed

1. Hamilton Khaki Navy Scuba Auto 40mm, Black Wave Dial, Bracelet (H82415130) — $975

If you only read one section of this guide, make it this one. The H82415130 is the Khaki Navy Scuba most people should buy. It's the refreshed 2026-style 40mm model with a stamped, lacquered wave-texture black dial. Under light the dial picks up a subtle shimmer that looks far more expensive than a flat black dial. Round lumed dot indices and applied markers keep it legible, and the 24-hour inner track nods to the line's military roots.

The 40mm by 12.95mm case is the sweet spot for most wrists between about 6.5 and 7.75 inches. The sloped crown guard protects the screw-down crown without making the case look chunky. It's paired with a three-row stainless steel bracelet with a folding clasp, which makes it a true one-watch collection: a dive watch on Saturday, a desk watch on Monday, and good-looking with a polo or a linen shirt in between.

• Case: 40mm stainless steel, 12.95mm thick, 20mm lugs
• Movement: H-10 automatic, 80-hour power reserve
• Water resistance: 100m (10 bar), screw-down crown
• Crystal: sapphire with anti-reflective coating
• Bezel: unidirectional 60-minute dive bezel

Who it's for: first-time Swiss watch buyers, anyone who wants one watch that does everything, and Miami locals who want a dive watch that also works at dinner.

View the Khaki Navy Scuba Auto 40mm H82415130

2. Hamilton Khaki Navy Scuba Auto 40mm, Turquoise Accents, Rubber Strap (H82415331) — $975

Same case, same H-10 movement, same 100m rating as the H82415130, with a completely different personality. The H82415331 pairs the black wave-texture dial with turquoise (seafoam) accents and a matching colored rubber strap. It's a watch that looks like summer. It looks right on the beach in Key Biscayne, on a paddleboard, or with white linen at a South Beach brunch.

Rubber is also the most practical strap for real water use. It doesn't hold salt and sand the way a bracelet's links do, it dries quickly, and it rinses clean under the tap. Because Hamilton uses a standard 20mm lug width across the 40mm Scubas, you can add a steel bracelet or NATO later and get two watches in one.

Who it's for: boaters, swimmers and beachgoers, anyone who wants a dive watch with color without going full neon, and buyers who want a fun second watch next to a dress piece.

View the Khaki Navy Scuba 40mm H82415331

3. Hamilton Khaki Navy Scuba Auto 40mm, Black Dial with Date (H82315131) — $975

The H82315131 is the classic Khaki Navy Scuba design: a matte black dial, bold lumed indices, a black 60-minute bezel, a date window and the 80-hour H-10 movement in the same 40mm by 12.95mm case. If the new wave dial is a little too "designed" for you and you want the most traditional, tool-watch look in the line, this is it.

A black-on-black diver is the closest thing the watch world has to a white T-shirt. It goes with everything and never looks dated. The date window is handy on a daily watch, and the 100m rating covers everything short of serious technical diving.

Who it's for: minimalists, people who want a no-nonsense black diver with a date, and buyers who like the classic Scuba layout better than the newer textured dial.

View the Khaki Navy Scuba Auto H82315131

4. Hamilton Khaki Navy Scuba Auto 43mm, Green Gradient Dial (H82525160) — $1,225

Step up to 43mm and the Khaki Navy Scuba becomes a different, more serious watch. The H82525160 has 300m of water resistance, three times that of the 40mm models, plus a scratch-resistant ceramic bezel insert in deep green and a green gradient dial that fades from bright to almost black at the edges. Ceramic matters on a dive watch. Aluminum bezel inserts scratch and fade in sun and saltwater over the years, while ceramic stays glossy and keeps its color almost indefinitely.

Interestingly, the 43mm case is slightly thinner than the 40mm, at 12.58mm. Spread over a wider diameter, that keeps it from feeling top-heavy. It still has the H-10 and its 80-hour reserve, and it comes on a steel bracelet. Green dive watches have become one of the most popular looks in watchmaking, and this one gives you that look at a fraction of what the luxury-brand versions cost.

• Case: 43mm stainless steel, 12.58mm thick
• Movement: H-10 automatic, 80 hours
• Water resistance: 300m (30 bar)
• Bezel: unidirectional, green ceramic insert
• Crystal: sapphire, anti-reflective

Who it's for: regular divers, larger wrists (about 7 inches and up), and anyone who wants the toughest non-GMT Scuba with a premium ceramic bezel.

View the Khaki Navy Scuba Auto 43mm H82525160

5. Hamilton Khaki Navy Scuba Auto GMT 43mm, Blue Dial (H82535140) — $1,525

This is the flagship of the Scuba line and the watch to buy if you travel. The H82535140 combines a blue gradient dial, a 24-hour rotating ceramic bezel and a red GMT hand driven by the H-14 automatic movement. It's essentially a Swiss "travel diver" with 300m of water resistance, an 80-hour reserve and a date, for roughly the price of a single luxury-brand bezel service.

The 24-hour bezel is the key design decision. With it, the watch can track three time zones: local time on the main hands, a second zone on the red GMT hand against the inner 24-hour track, and a third by turning the bezel so the GMT hand reads a different hour. If you split your life between Miami and Bogotá, Madrid or New York, or you simply fly a lot, it's genuinely useful every day.

The trade-off is honest: a 24-hour bezel isn't a 60-minute dive timer. You can still swim, snorkel and dive with this watch, and it's rated to 300m, but if you actually time dives with your bezel, look at the white GMT below instead. At 13.9mm it's also the thickest Scuba, though the bracelet balances it well.

We've written about this specific model before. Read The Ultimate Traveler's Diver: Hamilton Khaki Navy Scuba GMT 43mm for a closer look.

View the Khaki Navy Scuba Auto GMT H82535140

6. Hamilton Khaki Navy Scuba Automatic GMT 43mm, White Dial (H82555150) — $1,525

The H82555150 is the GMT for people who don't want to give up a real dive bezel. It uses the same 43mm by 13.9mm case, H-14 automatic GMT movement and 300m water resistance as the blue model, but it keeps a traditional 60-minute dive bezel and reads the second time zone off a 24-hour scale on the dial instead. You get both functions: time a dive in the morning, check home time on the red GMT hand in the evening.

The white matte dial is the other reason to choose it. White dive watches look bright and modern, almost "polar," and they're excellent for legibility in daylight. In Miami's sun, a white-dial diver on a steel bracelet looks clean and cool, and it's less common than the sea of black and blue divers.

Who it's for: frequent flyers who also dive or snorkel, buyers who want a white dial, and anyone who wants the most complete, most capable watch in the Scuba line.

View the Khaki Navy Scuba Automatic GMT H82555150

7. Hamilton Khaki Navy Scuba Quartz 37mm, White Dial (H82221310) — $825

The smallest and most accessible Scuba deserves more attention than it gets. The H82221310 is a 37mm, 10.77mm-thick diver with a Swiss quartz movement, 100m water resistance, a sapphire crystal and, unusually at this price, a ceramic bezel with engraved numerals. The white dial makes it look crisp and sporty, and the slim case slides under a shirt cuff easily.

The 37mm size makes this a genuinely unisex dive watch. On a woman's wrist it reads as a confident sports watch rather than an oversized men's piece. On smaller men's wrists, around 6 to 6.5 inches, it fits the way vintage divers used to. The quartz movement means set-and-forget accuracy and no winding. Grab it from the drawer after two weeks and it's still on time.

Who it's for: smaller wrists, women who want a real dive watch, buyers who prefer quartz convenience, and anyone shopping for a Swiss diver under $900.

View the Khaki Navy Scuba Quartz H82221310

Head-to-Head Comparisons

Khaki Navy Scuba 40mm vs 43mm

This is the most common question we get, and it comes down to three things: wrist size, water use and bezel material.

• Size: The 40mm wears true to its size and suits most wrists from about 6.5 to 7.5 inches. The 43mm wears big, because dive watches have wide bezels and broad dials, and it's best from about 7 inches and up. If you're between sizes, the 40mm is the safer choice. Most people who regret a watch purchase regret going too big, not too small.
• Water resistance: 100m on the 40mm vs 300m on the 43mm. As explained above, 100m covers recreational use; 300m buys margin and durability.
• Bezel: The 43mm models get ceramic bezel inserts, which are more scratch- and fade-resistant than the 40mm's aluminum.
• Price: $975 vs $1,225, a $250 premium for the bigger, tougher case.

Verdict: Most people should buy the 40mm. Buy the 43mm if you dive regularly, have a larger wrist, or want the ceramic bezel and extra toughness.

Scuba Auto vs Scuba GMT

The GMT costs $550 more than the 40mm Auto ($1,525 vs $975) and $300 more than the 43mm Auto. What you get for that is the H-14 movement's 24-hour hand and the ability to track a second (or third) time zone. You also get the 300m 43mm case, so compare the GMT with the 43mm green rather than the 40mm.

Verdict: If you travel internationally a few times a year, have family in another time zone, or work with offices abroad, the GMT pays for itself in daily usefulness, and Miami is a city where a lot of people fit that description. If you rarely leave your time zone, the Auto is the better value and is thinner.

Blue GMT (H82535140) vs White GMT (H82555150)

Same price, same movement, same case. The difference is the bezel and the look.

• Blue H82535140: a 24-hour ceramic bezel, so it can track three time zones. It's more of a "travel watch," and the blue gradient dial is warmer and dressier.
• White H82555150: a 60-minute dive bezel, so it times dives and tracks two zones. It's more of a "dive watch," and the white dial is sportier and brighter.

Verdict: If you'll use the bezel for travel, get the blue. If you'll use it underwater or to time parking meters, steaks and meetings, get the white.

Scuba Quartz 37mm vs Scuba Auto 40mm

The quartz is $150 cheaper, 3mm smaller and more than 2mm thinner, with a ceramic bezel and set-and-forget accuracy. The Auto has the 80-hour mechanical movement, a sweeping seconds hand and the wave dial or classic black dial. Water resistance is the same, 100m.

Verdict: Choose the quartz for a smaller wrist, maximum convenience, or a watch for a partner. Choose the Auto if you love mechanical watches, want the smooth sweep of the seconds hand, or plan to keep the watch for decades as an heirloom.

How the Khaki Navy Scuba Compares with Other Dive Watches

The Khaki Navy Scuba sits in a competitive space: Swiss automatic dive watches under $1,600. Here's how it stacks up, roughly speaking:

• vs Japanese divers (Seiko Prospex and similar): Seiko offers excellent value and enormous variety, and some of its divers cost less. The Hamilton's advantages are Swiss manufacture, a standard sapphire crystal on every model, and an 80-hour power reserve that most similarly priced Japanese automatics don't match. We cover these brands in our best dive watches of 2026 guide.
• vs Tissot Seastar: Tissot is Hamilton's Swatch Group sibling, and the Seastar uses the same Powermatic 80 family. The two are close competitors. Hamilton's edge is the military and naval design language, the 24-hour military track and the GMT option. For a brand-level comparison, read Tissot vs Hamilton: which Swiss watch brand is better in 2026?
• vs luxury divers ($5,000+): You don't get an in-house manufacture movement, high-end case finishing or the same brand prestige. You do get 80% of the real-world function for 20% of the price, which is exactly why so many collectors keep a Khaki Navy Scuba as their beach watch even when they own pricier pieces.

Why a GMT Makes So Much Sense in Miami

Miami is one of the most international cities in the United States. On any given day, our clients are coordinating with family in Caracas, business partners in São Paulo, suppliers in Madrid or friends in Buenos Aires, and Miami International Airport connects directly to almost all of Latin America and Europe. A GMT watch fits this lifestyle well.

Here's how you'd use the Scuba GMT in practice. Set the main hands to Miami time. Set the red GMT hand to home time: Madrid, for example, which is six hours ahead most of the year. Now every glance at your wrist tells you whether it's a reasonable hour to call your mother. Fly to Madrid and you don't touch the GMT hand. You just jump the main hour hand forward with the crown, and the red hand keeps showing Miami time so you know when to call the office. It's simple and mechanical, and it's much more satisfying than checking a world clock app.

Sizing Guide: Which Khaki Navy Scuba Fits Your Wrist?

Wrist circumference	Best Scuba size	Suggested models
Under 6.25 in (16 cm)	37mm	Scuba Quartz 37 H82221310
6.25–6.75 in (16–17 cm)	37mm or 40mm	H82221310, H82415130, H82415331
6.75–7.25 in (17–18.5 cm)	40mm (43mm if you like a bold look)	H82415130, H82315131, H82415331
7.25 in and up (18.5 cm+)	40mm or 43mm	H82525160, H82535140, H82555150

One tip: lug-to-lug length matters more than diameter for how a watch actually wears. Dive watches with integrated-looking bracelets can wear larger than the number suggests. If you're in South Florida, the best thing you can do is try them on. Come visit our showroom and we'll put the 40mm and 43mm on your wrist side by side.

Straps and Bracelets: Getting the Most from Your Scuba

All the 40mm Khaki Navy Scuba models use a 20mm lug width, one of the most common sizes in watchmaking, which makes swapping straps easy. A few ideas:

• Steel bracelet: the most versatile option. It dresses up well, it's durable, and it's ideal for daily wear. Rinse it with fresh water after the ocean so salt and sand don't build up between the links.
• Rubber strap: the best choice for swimming, diving and Miami's humid summers. It's comfortable when wet, doesn't absorb sweat, and dries in seconds.
• NATO or fabric strap: the military look the Khaki line was built on. It's lightweight and casual, and it adds a layer of security, since if a spring bar fails the watch stays on the strap.
• Leather: fine for dry occasions, but keep leather away from water, pool chlorine and sweat-heavy days. It will degrade quickly.

Caring for Your Hamilton Khaki Navy Scuba

A dive watch is built to be used, but a little care keeps it performing for decades:

1. Always screw the crown down before the watch touches water. It's the single most important habit for a dive watch owner. An unscrewed crown is the most common cause of water damage.
2. Never operate the crown underwater. Set the time and date on dry land.
3. Rinse with fresh water after saltwater or the pool. Salt crystals and chlorine are hard on gaskets and bracelets over time.
4. Avoid hot tubs and saunas. Heat makes gaskets expand and contract, and that's tougher on water resistance than depth is.
5. Have the water resistance tested about once a year if you swim or dive with it regularly, and have the gaskets replaced as needed. It's an inexpensive check that prevents expensive repairs.
6. Service the movement roughly every five to seven years for automatics, or sooner if accuracy drops noticeably. For the quartz model, replace the battery when it runs down, and have the seals checked at the same time.
7. Store away from strong magnets. The Nivachron hairspring resists magnetism well, but there's no reason to tempt it.

Is the Hamilton Khaki Navy Scuba a Good Investment?

Let's be straight about this: Hamilton watches are not "investment watches" in the sense that they appreciate in value. Very few watches at any price do, and buying a watch at this level as a financial play is the wrong mindset. What the Khaki Navy Scuba offers is exceptional value for money. It's a Swiss automatic from a brand with more than 130 years of history, with sapphire crystals, 80-hour movements and genuine dive specs, at a price that lets you actually wear it and enjoy it without worrying about every scratch.

It's also a watch with real staying power. A well-maintained Khaki Navy Scuba can easily last a lifetime and be passed down. That's the kind of value that matters.

Why Buy Your Hamilton Khaki Navy Scuba from Lexor Miami?

Lexor Miami is an authorized retailer of luxury watches, eyewear and fragrances, and we've been serving South Florida for more than 20 years. When you buy your Hamilton from us, you get:

• 100% authentic, brand-new watches, sourced through authorized channels and backed by the manufacturer's warranty.
• Free shipping on orders over $150 to the 48 contiguous U.S. states. Standard delivery is 4–7 business days, and express options are available at checkout.
• Easy 30-day returns with a prepaid return label.
• Secure payment and a family-owned, women-owned business that knows its customers by name.
• A real showroom where you can try on the 37mm, 40mm and 43mm Scubas side by side before you decide.

Visit us at 2371 NW 20th St, Miami, FL, Monday through Saturday, 10 AM to 6 PM. Free parking and on-site security are available. Or call or WhatsApp us at +1 786 333 1331 for live availability, sizing help or a second opinion between two models. If you're still deciding where to shop, our guide to buying authentic luxury watches in Miami explains what to look for in any retailer.

Browse the Hamilton Collection at Lexor Miami

Our Final Verdict

The Hamilton Khaki Navy Scuba is one of the smartest buys in Swiss watchmaking right now, and the key is matching the right reference to your life:

• For one watch that does everything, get the Scuba Auto 40mm H82415130.
• For beach-and-boat summers, get the Scuba 40mm H82415331 on rubber.
• For the classic black diver, get the Scuba Auto H82315131.
• For serious diving and bigger wrists, get the Scuba Auto 43mm H82525160.
• For frequent travel, get the Scuba GMT H82535140 in blue.
• For travel plus real dive timing, get the Scuba GMT H82555150 in white.
• For smaller wrists or quartz convenience, get the Scuba Quartz 37mm H82221310.

Whichever one you choose, you're getting a genuine Swiss dive watch with a story that goes back to the U.S. Navy, and a watch that's made to be worn in the water, not kept in a safe.

Shop Our Top Pick: Khaki Navy Scuba Auto 40mm

Frequently Asked Questions

Can you actually dive with a Hamilton Khaki Navy Scuba?

Yes. The 40mm and 37mm models are rated to 100m and the 43mm models to 300m. All have screw-down crowns and luminous markers. The 100m models are suited to swimming, snorkeling and recreational diving; the 300m models give extra margin for regular divers. Always screw the crown down before entering the water.

What movement is in the Hamilton Khaki Navy Scuba?

The automatic models use the Hamilton H-10 caliber, with an 80-hour power reserve and an anti-magnetic Nivachron balance spring. The GMT models use the H-14 automatic GMT caliber. The 37mm Scuba uses a Swiss quartz movement.

Is the Hamilton Khaki Navy Scuba Swiss made?

Yes. Hamilton was founded in Lancaster, Pennsylvania in 1892, but today it's a Swiss brand headquartered in Biel/Bienne and part of the Swatch Group. The Khaki Navy Scuba is Swiss made.

Should I choose the 40mm or 43mm Khaki Navy Scuba?

Choose the 40mm for most wrists (about 6.5 to 7.5 inches) and everyday wear. Choose the 43mm if you have a larger wrist, dive regularly, or want 300m water resistance and a ceramic bezel.

What is the difference between the two Khaki Navy Scuba GMT models?

The blue H82535140 has a 24-hour ceramic bezel, which can track up to three time zones. The white H82555150 keeps a 60-minute dive bezel, so you can time dives and track two time zones. Both use the H-14 automatic GMT movement in a 43mm, 300m case and cost $1,525 at Lexor Miami.

Is the Khaki Navy Scuba Quartz 37mm good for women?

Yes. At 37mm and just 10.77mm thick, the H82221310 is one of the best unisex dive watches in the Hamilton line. It has a ceramic bezel, a sapphire crystal, 100m of water resistance and set-and-forget Swiss quartz accuracy.

How long does the Hamilton H-10 power reserve last?

About 80 hours, or more than three days. You can take the watch off on Friday night and it will still be running on Monday morning.

Where can I buy an authentic Hamilton Khaki Navy Scuba in Miami?

Lexor Miami is an authorized retailer at 2371 NW 20th St, Miami, FL, open Monday to Saturday from 10 AM to 6 PM. You can also order online at lexormiami.com, with free shipping over $150 to the contiguous U.S. and 30-day returns.