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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →The Hamilton Intra-Matic Auto H38455781 is a compact, 38 mm automatic watch with a gray dial, sapphire crystal and a 42-hour power reserve. It is the clearest match for a “Hamilton Intra-Matic 38mm” review, but it is not the only 38 mm version: check the reference number before relying on any specification. Hamilton currently marks H38455781 as a past-collection model and says it is unavailable online through its US store, so any purchase depends on independently verified retailer or pre-owned stock.
Which Hamilton Intra-Matic 38mm is this?
This review focuses on reference H38455781, which Hamilton’s US product page identifies as the American Classic Intra-Matic Auto 38mm. Hamilton’s collection booklet also lists two other 38 mm Intra-Matic Auto references, H38455731 and H38475501. Their presence means “Intra-Matic 38mm” alone does not identify a specific dial, finish or configuration.
Hamilton frames the collection as drawing on a 1960s look and feel; that is the brand’s description, not an independent historical assessment. Before buying or comparing a listing, match its reference number and pictured configuration to the model you intend to get.
Hamilton Intra-Matic Auto H38455781 specifications
| Specification | Hamilton listing |
|---|---|
| Case diameter | 38 mm |
| Case thickness | 9.8 mm |
| Case and dial | Stainless-steel case; gray dial |
| Crystal | Sapphire |
| Movement | Automatic caliber 2892-A2 |
| Power reserve | 42 hours |
| Lug width | 20 mm |
| Water resistance | 5 bar (50 m) |
| Documented original strap | Hamilton reference H6003841091, cow leather, pin buckle, 18 mm buckle width |
These figures are Hamilton’s published specifications, not independent measurements. The listed 50 m rating is a water-resistance specification; it does not by itself establish a specific swimming or diving recommendation.
#1 Best Overall
- AUTOMATIC MOVEMENT: Swiss 2892-A2 movement with 42-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 50M: Withstands 5 bar (50 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: 38mm stainless steel case with a refined 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.
Movement and power reserve: don’t confuse the 38mm with 40mm models
Hamilton lists caliber 2892-A2 and a 42-hour power reserve for H38455781. The similarly named 40 mm references H38425540 and H38425720 instead use Hamilton’s H-10 caliber and have an 80-hour power reserve. Those specifications belong to the 40 mm models, not this 38 mm reference.
What the specifications mean for a buyer
A slim, modest-diameter case on paper
The published 38 mm diameter and 9.8 mm thickness describe a relatively restrained case profile. They cannot establish how the watch will sit on a particular wrist: wrist shape, lug geometry and strap choice affect the wearing experience, and no fit testing is established here. If fit is decisive, try the exact reference on or confirm the seller’s return terms before purchase.
Rank #2
- AUTOMATIC MOVEMENT: Swiss 2892-A2 movement with 42-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 50M: Withstands 5 bar (50 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: 38mm stainless steel case with a refined brown 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.
A 20 mm lug width gives a clear strap measurement
H38455781 has 20 mm lugs. Hamilton documents its original replacement strap as H6003841091, a cow-leather strap with a pin buckle and 18 mm buckle width. A 20 mm lug measurement is not proof that every third-party strap will fit well; verify the strap’s dimensions and compatibility before ordering.
Water resistance is a rating, not a use guarantee
Hamilton lists 5 bar (50 m) water resistance. The listing does not provide a specific activity recommendation, and the rating does not establish the condition of a particular watch now. For a past-collection or used example, ask the seller about its condition and any water-resistance testing rather than assuming the original rating remains valid.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteRank #3
- 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.
Is the Hamilton Intra-Matic 38mm worth buying?
H38455781 is worth considering if you want the specific combination Hamilton lists: a 38 mm stainless-steel automatic with a gray dial, sapphire crystal and 42-hour reserve. The published specification sheet is useful for confirming what the reference is, but it cannot answer questions about real-world accuracy, comfort, service costs or the condition of an individual example.
Availability is a central part of the decision. Hamilton labels H38455781 “Past collection” and its US listing says it is not available online. That does not establish whether independent retailers or the secondary market have stock, nor does it establish a current fair price. Assess an actual offer on its own evidence: seller reputation, authenticity and provenance, condition, warranty or return policy, and price.
Rank #4
- Featuring a Black Band, Silver-tone Case, Scratch Resistant Sapphire Crystal
- - Back: Stainless steel back
- - Case Colour: Silver
- - Case Material: Stainless Steel
How to check a listing before you buy
- Confirm the reference. Look for H38455781 on the listing, case documentation or seller-provided photographs. Do not infer the reference from “Intra-Matic 38mm” alone.
- Match the configuration. Compare the dial, case and strap shown with the exact model being offered; Hamilton lists multiple 38 mm references.
- Check the movement claim. H38455781 is listed with caliber 2892-A2 and a 42-hour reserve. An 80-hour reserve and H-10 movement correspond to the cited 40 mm variants, not this reference.
- Ask about the individual watch. For a used or older example, request clear condition details and documentation, and ask whether water resistance has been tested. A published factory specification cannot confirm present condition.
- Evaluate the seller and terms. Verify the seller’s reputation, provenance, warranty or return policy, and the actual asking price before committing. Current inventory and value require checking the specific offer.
Verdict
Hamilton’s H38455781 is a clearly specified 38 mm Intra-Matic Auto, and its 20 mm lug width and 42-hour reserve make it straightforward to distinguish from the larger 40 mm variants. The main caveat is buying one now: Hamilton lists it as past collection and unavailable online in the US, while the title alone can refer to more than one 38 mm version. Buy only after confirming the reference and evaluating the particular watch and seller.
Quick Recap
Best Value
- AUTOMATIC MOVEMENT: Swiss H-31 automatic chronograph movement provides a 60-hour power reserve, ensuring consistent and precise performance—a testament to Swiss craftsmanship, ready for both daily tasks and adventures.
- 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 stainless steel bracelet. Equipped with sapphire crystal and classic detailing, it blends vintage charm with modern functionality for any occasion.
- 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.
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.
