Hamilton has refreshed one of its most versatile dive watch families for summer 2026. The Hamilton Khaki Navy Scuba line now features dynamic wave-textured dials across both the compact 40mm Scuba and the travel-ready GMT 43mm. As a result, a collection already known for dependable everyday wear gains genuine new personality.
The Khaki Navy is Hamilton’s dive watch family, built with the same rugged spirit as the brand’s military-inspired Khaki Field tool watches. Meanwhile, the 2026 refresh spans two distinct watches at two price points. For collectors exploring Hamilton’s broader catalog, our coverage of the Hamilton Khaki Field Mechanical looks at the brand’s field watch heritage.
What’s New for 2026
The headline change across the line is the dial. Each refreshed model features a wave-textured surface that adds dimension and visual interest. The stamped and lacquered waves catch the light across the dial. As a result, the watches read as more refined than their everyday price points suggest.
The 2026 refresh also introduces new dot indices alongside the wedge-shaped markers. These thicker indices are treated with Super-LumiNova to match the hands. Meanwhile, both the 40mm and GMT 43mm keep their proven case dimensions and dive-watch construction.
Hamilton Khaki Navy Scuba Auto 40mm
The Scuba Auto 40mm is the smaller, more versatile member of the line. It pairs genuine dive-watch capability with a compact, everyday-friendly case. As a result, it works as well for daily wear as it does for recreational water activities.
The 40mm stainless steel case measures 13mm thick. A screw-down crown sits protected by lateral guards, while the screwed caseback keeps water out and guards against knocks. The unidirectional 60-minute bezel comes in black or blue, with an inverted triangle marking noon. Water resistance comes in at 100 meters, which handles swimming, snorkeling, and everyday wear.
For buyers wondering how a 40mm diver should sit on the wrist, our guide on how should a watch fit covers case size and proportion in detail.
The Five New Scuba 40mm Versions
The Scuba Auto 40mm arrives in five colorways, all priced at $975 and sharing the same case, movement, and 100m water resistance. The dials come in black, white, and blue, offered across both steel bracelets and sporty rubber straps.
The steel-bracelet versions, including the Scuba 40mm in white (reference H82425110) and the Scuba 40mm in blue (reference H82425140), lean understated and versatile. Meanwhile, the rubber-strap versions bring more expressive personality, including a black-dial Scuba 40mm (reference H82415330) and the standout Scuba 40mm with turquoise strap (reference H82415331). As a result, buyers can choose between everyday refinement and seasonal color.
Every version shares the new wave-textured dial, the dot-and-wedge index layout, and Super-LumiNova on the hands and markers. For buyers who want the most distinctive option, the turquoise-strap model stands out as the boldest of the five.
The Scuba 40mm Movement: Caliber H-10
Inside the Scuba Auto 40mm sits Hamilton’s automatic Caliber H-10, the brand’s version of the Powermatic 80.
Caliber H-10 specifications:
- 80-hour power reserve
- Automatic winding
- Antimagnetic Nivachron hairspring
The 80-hour power reserve is a genuine standout at this price. As a result, the watch can sit unworn over a long weekend and still be running. Meanwhile, the Nivachron hairspring improves resistance to magnetic fields for added everyday reliability.
Hamilton Khaki Navy Scuba Auto GMT 43mm
For travelers, Hamilton also refreshed the larger Scuba Auto GMT 43mm. This version adds a second time zone to the dive-watch formula, which makes it a genuine travel companion. As a result, it suits buyers who want one watch for both the water and international travel.
The 43mm steel case measures 13.9mm thick and offers a deeper 300m water resistance rating. Most of the case is brushed, with polished accents on the crown, bezel notches, and the central bracelet links. Meanwhile, the GMT converts the dive bezel into a 24-hour indicator, tracking a second time zone via a red central GMT hand. The polished ceramic bezel insert matches the dial color for a tone-on-tone effect.
The GMT 43mm comes in two versions, both priced at $1,525:
- Blue dial (reference H82535140) with a subtle gradient effect and a blue ceramic bezel
- Black dial (reference H82555130) with a matching black ceramic bezel
The GMT Movement: Caliber H-14
The Scuba Auto GMT 43mm uses Hamilton’s automatic Caliber H-14, a GMT version of the Powermatic 80. Like the H-10, it offers an 80-hour power reserve and an antimagnetic Nivachron balance spring. As a result, it pairs genuine travel functionality with the same long-running reliability found across the line.
Scuba 40mm vs. Scuba GMT 43mm: Which Is Right for You?
Both watches share the Khaki Navy DNA, but they serve different needs. Below is a quick comparison.
Case: 40mm, 13mm thick
Movement: Caliber H-10 (time and date)
Water resistance: 100m
Price: $975
Case: 43mm, 13.9mm thick
Movement: Caliber H-14 (adds second time zone)
Water resistance: 300m
Price: $1,525
As a result, the choice comes down to size and function. The 40mm suits buyers who want a compact, versatile everyday diver. Meanwhile, the GMT 43mm suits travelers who want more wrist presence, deeper water resistance, and a second time zone. For buyers weighing the decision, our guide on how much to spend on a first luxury watch helps frame the budget.
Who the Khaki Navy Scuba Is Built For
The refreshed Khaki Navy Scuba line makes the most sense for buyers who:
- Want a versatile dive watch for everyday wear
- Appreciate the new wave-textured dial styling
- Value an automatic movement with a long power reserve
- Want genuine Swiss watchmaking at an accessible price
- Need a do-anything watch for water, work, and weekends
- Want either a compact 40mm diver or a travel-ready GMT
That versatility is a big part of the appeal. For buyers looking for the kind of do-anything piece often described as a GADA watch, the Scuba 40mm makes a particularly strong case.
For dads especially, the Scuba also makes a strong Father’s Day watch. For readers exploring gift ideas more broadly, our guide to Father’s Day watches for 2026 covers other strong options across different styles and price points.
Final Thoughts on the 2026 Khaki Navy Scuba
The 2026 refresh keeps everything that made the Khaki Navy Scuba a success while adding genuine visual appeal. The wave-textured dials elevate both the 40mm and the GMT 43mm without raising their accessible prices. As a result, Hamilton has improved an already strong dive watch line.
For buyers who want a compact everyday diver, the Scuba Auto 40mm delivers at $975. Meanwhile, travelers who want a second time zone and deeper water resistance have the GMT 43mm at $1,525. Either way, the new wave dials give the collection a fresh, ocean-inspired personality.
See Hamilton at Precision Watches
For shoppers looking for an authorized Hamilton retailer near Philadelphia, Precision Watches is a family-owned store just outside the city in Lower Gwynedd, PA. The showroom features watches across the Hamilton lineup, including the Khaki Navy, Khaki Field, and Jazzmaster collections.
Our team can help you find the right Hamilton for your style and budget. In addition, we offer Hamilton watch repair by our certified watchmakers to keep your watch running for years to come.
For more new arrivals, our journal covers the latest watch releases and industry news.
Frequently Asked Questions About the Hamilton Khaki Navy Scuba Auto 40mm
How much does the Hamilton Khaki Navy Scuba cost?
The Khaki Navy Scuba Auto 40mm is priced at $975. Meanwhile, the larger Scuba Auto GMT 43mm, which adds a second time zone, is priced at $1,525.
What is the difference between the Scuba 40mm and the Scuba GMT 43mm?
The Scuba 40mm is a compact dive watch with 100m water resistance and the time-and-date Caliber H-10. The GMT 43mm is larger, offers 300m water resistance, and adds a second time zone via the Caliber H-14. As a result, the GMT suits travelers, while the 40mm suits everyday versatility.
What movement powers the Hamilton Khaki Navy Scuba?
The Scuba 40mm uses the automatic Caliber H-10, while the GMT 43mm uses the Caliber H-14. Both are versions of the Powermatic 80 with an 80-hour power reserve and an antimagnetic Nivachron balance spring.
What is the water resistance of the Khaki Navy Scuba?
The Scuba Auto 40mm is water resistant to 100 meters. The Scuba Auto GMT 43mm offers a deeper 300-meter rating. As a result, both handle water activities, with the GMT suited to more demanding use.
Is the Hamilton Khaki Navy Scuba a good everyday watch?
Yes. The compact 40mm case, 100m water resistance, 80-hour power reserve, and durable construction make the Scuba 40mm a strong everyday option. Meanwhile, the GMT 43mm adds travel functionality for buyers who want a second time zone.
