The blue Hamilton Khaki Field Murph 38mm comes in two official configurations: stainless-steel bracelet reference H70405140 and black calf-leather reference H70405740. Hamilton lists the same core specifications for both; the main documented differences are the strap, clasp and regional price listing.
Which blue 38mm Murph references are available?
Hamilton’s current collection lists two blue-dial Murph 38mm variants. Check the reference number before ordering: the bracelet and leather versions are separate packages.
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| Reference | Factory strap and clasp | Hamilton-listed price observation |
|---|---|---|
| H70405140 | Stainless-steel bracelet, strap reference H6050000281; folding clasp; Easy Click listed | CHF 945 including VAT on Hamilton’s international page when accessed October 12, 2026 |
| H70405740 | Black calf-leather strap, strap reference H6000001431; pin buckle | $995 and in stock on Hamilton’s U.S. page when accessed October 12, 2026 |
These prices refer to different references and regions, so they are not a like-for-like price comparison. Availability and pricing can change; confirm the reference and local listing before buying. Hamilton’s H70405140 listing and U.S. H70405740 listing show the respective configurations.
How to choose between bracelet and leather
- Choose H70405140 if you want the factory stainless-steel bracelet and folding clasp.
- Choose H70405740 if you want the black calf-leather strap and pin buckle.
The official listings establish a 20 mm lug width, but do not confirm that every aftermarket strap will fit. Check attachment details and fit for the exact reference before purchasing a replacement.
#1 Best Overall
- 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.
- BUILT FOR ADVENTURE: Featuring a 38mm stainless steel case, a black dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- 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.
What specifications do both models share?
Hamilton specifies the following for both blue 38mm references:
- Automatic H-10 movement
- 38 mm stainless-steel case, 11.1 mm thick
- 80-hour power reserve
- Sapphire crystal
- 20 mm lug width
- 10 bar/100 m water resistance
These are manufacturer specifications, not independent test results. The 10 bar/100 m rating is not, by itself, a recommendation for a particular water activity; consider Hamilton’s guidance for the watch and its condition before exposing it to water. Hamilton’s H70405140 page and H70405740 page list the specifications.
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 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.
- BUILT FOR ADVENTURE: Featuring a 38mm stainless steel case, a black dial and stainless steel bracelet, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- 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.
What is distinctive about the blue dial?
Hamilton describes the dial as a blue-to-black gradient inspired by an interstellar comet. Its product copy says the blue center evokes ionized gases, fading to black at the edge, with a grained, stardust-inspired texture. The brand also notes slightly domed numerals and cathedral-shaped hands. These are Hamilton’s descriptions of the design, rather than independent technical characterizations. The bracelet model page and the leather model page show the respective watches.
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How is the Murph connected to Interstellar?
Hamilton says the Khaki Field Murph was created for Christopher Nolan’s Interstellar as a faithful recreation of the watch worn by Murph, the character played by Jessica Chastain. In a January 1, 2019 press release, Hamilton called the watch “one of the main emotional links between the two main characters” and said fans gave it the affectionate name “The Murph.” The blue 38mm model is a later expression of that watch: Hamilton’s September 1, 2026 press release introduced it under the subhead “A NEW EXPRESSION OF THE MURPH.” Hamilton’s Murph page, 2019 film-background release and 2026 blue Murph release provide the brand’s account.
Quick Recap
Best Value
- 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.
- BUILT FOR ADVENTURE: Featuring a 38mm stainless steel case, a black dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- 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.
Rank #4
- 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.
- BUILT FOR ADVENTURE: Featuring a 42mm stainless steel case, a black dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- 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.
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.
- BUILT FOR ADVENTURE: Featuring a 38mm stainless steel case, a white dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- 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.
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.
