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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The Hamilton American Classic Intra-Matic Auto Chrono Black PVD is reference H38446730, a 40 mm automatic chronograph with a black-coated steel case, black dial and vintage-racing design cues. Its defining practical details are a 14.45 mm case thickness, 49 mm lug-to-lug measurement, 60-hour stated power reserve and 10-bar water-resistance rating.
What is the Hamilton Intra-Matic Auto Chrono Black PVD?
H38446730 is Hamilton’s all-black PVD-coated version of the Intra-Matic Auto Chrono. Hamilton links the collection to its racing roots in 1968 and says the design takes inspiration from the Chrono-matic, which the brand describes as its first automatic chronograph. That is Hamilton’s product-history wording, not a quotation attributed to a named individual. Hamilton’s international product page identifies this specific reference.
| # | Preview | Product | Price | |
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| 1 |
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Hamilton American Classic Intra-Matic Mechanical Men's Watch, 40mm Case | $2,445.00 | Buy on Amazon |
| 2 |
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Hamilton Khaki Navy Automatic Men's Watch, 43mm Stainless Steel Case | $1,225.00 | Buy on Amazon |
| 3 |
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Hamilton Khaki Navy Automatic Men's Watch, 40mm Stainless Steel Case | $975.00 | Buy on Amazon |
The reference number matters: the Intra-Matic Auto Chrono name covers other finishes and dial variants. Check for H38446730 when comparing listings so you do not mistake another version for the black PVD model.
H38446730 specifications
| Specification | Hamilton listing |
|---|---|
| Movement | Automatic H-31 caliber |
| Functions | Chronograph, date and tachymeter |
| Power reserve | 60 hours, as stated by Hamilton |
| Case diameter | 40 mm |
| Case thickness | 14.45 mm |
| Lug-to-lug | 49 mm |
| Lug width | 20 mm |
| Case | Stainless steel with black PVD coating |
| Crystal | Sapphire with anti-reflection treatment |
| Other listed features | Screw-down crown, Nivachron balance spring and Super-LumiNova |
| Water resistance | 10 bar (100 m) |
| Supplied strap | Calf leather; Hamilton reference H6000002111 |
| Buckle | Pin buckle; 18 mm buckle width |
These are manufacturer specifications on Hamilton’s undated product page, not independent test results. Hamilton lists 10 bar (100 m) water resistance but does not state a use-specific guarantee on that page, so the rating alone should not be treated as a promise for a particular water activity.
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- MANUAL WINDING: Designed for precision, this hand-wound watch is powered by the exclusive H-51 mechanical chronograph movement that embodies the core principles of watchmaking, offering an extended 60-hour power reserve.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- CLEAR AND TIMELESS DESIGN: 40mm stainless steel case with a refined white dial and an elegant leather strap. Equipped with sapphire crystal and classic detailing, it blends vintage charm with modern functionality for any occasion.
- PREMIUM MATERIALS: Leather strap with pin buckle offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
How the size and black finish affect the choice
The 40 mm diameter gives the watch a conventional case width, but diameter is only part of how a chronograph wears. At 14.45 mm thick, it has substantial height, and the 49 mm lug-to-lug span is useful to compare with a watch that already fits you well. If possible, try it on: wrist shape, strap tension and case proportions affect perceived size.
The black PVD-coated stainless-steel case and black dial make this a distinctly monochrome take on the vintage-inspired racing format. The finish is a core design choice rather than a different movement specification. Hamilton lists sapphire crystal with anti-reflection treatment, plus Super-LumiNova for low-light visibility.
Rank #2
- AUTOMATIC MOVEMENT: Swiss H-10 movement with 80-hour reserve ensures consistent performance. Experience precision that matches both daily tasks and adventures, a testament to Swiss craftsmanship in automatic timekeeping.
- WATER RESISTANT TO 300M: Withstands 30 bar (300 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- MADE FOR THE DEEP: Designed with a 43mm stainless steel case and a striking blue dial, this watch is water-resistant up to 300m, making it perfect for underwater exploration. Sapphire crystal ensures excellent visibility in any marine environment.
- PREMIUM MATERIALS: Stainless steel bracelet with folding clasp offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
Movement and chronograph functions
The watch uses Hamilton’s automatic H-31 caliber and includes a chronograph, date and tachymeter. Hamilton gives the movement a 60-hour power reserve. The tachymeter is the scale used for calculating speed over a known distance from elapsed time; the chronograph supplies the timing function. These listed features describe the watch’s functions, not independent accuracy or durability testing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Strap fit and replacement options
Hamilton lists a calf-leather strap under reference H6000002111. The watch’s lug width is 20 mm, while the listed buckle width is 18 mm. Those measurements are not interchangeable: the lug figure is the nominal strap width at the case, and the buckle figure describes the narrower buckle end.
Rank #3
- AUTOMATIC MOVEMENT: Swiss H-10 movement with 80-hour reserve ensures consistent performance. Experience precision that matches both daily tasks and adventures, a testament to Swiss craftsmanship in automatic timekeeping.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- MADE FOR THE DEEP: Designed with a 40mm stainless steel case and a striking green dial, this watch is water-resistant up to 100m, making it perfect for underwater exploration. Sapphire crystal ensures excellent visibility in any marine environment.
- PREMIUM MATERIALS: Stainless steel bracelet with folding clasp offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
A third-party strap marked 20 mm may be a starting point, but confirm its end shape and attachment geometry as well as buckle compatibility before ordering. Hamilton’s reference for the listed strap is useful when seeking the same replacement.
Price and regional purchase terms
Hamilton’s international product page displayed CHF 2,295 when checked, while its UK page displayed £2,265 and an in-stock status. These are regional page snapshots, not a global price or a guarantee of current availability. The UK product page showed a 2-year international warranty, complimentary express delivery and 30-day returns at the time represented by that listing; confirm the current terms on the purchase page before ordering.
What to compare before choosing it
For a meaningful comparison with another automatic chronograph, line up like-for-like specifications rather than relying on the shared category name. Check case diameter, thickness and lug-to-lug, then compare movement type, stated power reserve, chronograph functions, water-resistance rating, case finish and strap or bracelet fit. In particular, distinguish H38446730’s black PVD finish from other Intra-Matic variants and assess the 49 mm lug-to-lug span against your wrist or a watch you already wear comfortably.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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