The Hamilton Khaki Field Titanium Auto H70545550 is a 42 mm, time-only automatic field watch with a black dial, sapphire crystal and titanium case. Its H-10 movement has a manufacturer-stated 80-hour power reserve, and Hamilton lists the watch at $1,195 on its US site as of October 7, 2026. The main decision is whether its size, titanium construction and price suit your wrist and preferences.
Hamilton Khaki Field Titanium Auto H70545550 specifications
| Specification | Hamilton H70545550 |
|---|---|
| Collection/status | Khaki Field; listed in Hamilton’s current collection |
| Movement | Automatic Hamilton H-10; three hands, no date |
| Power reserve | 80 hours, as stated by Hamilton |
| Balance spring | Nivachron |
| Case | Titanium; 42 mm diameter; 11.45 mm thick |
| Dial and crystal | Black dial; sapphire crystal |
| Lug width | 20 mm |
| Water resistance | 10 bar / 100 m |
| Case back and lume | Open case back; Super-LumiNova |
| Supplied strap | Cow leather with H-buckle; Hamilton strap reference H6007051251 |
| US price and availability | $1,195 and listed in stock on Hamilton’s US product page on October 7, 2026; regional, time-sensitive listing |
Specifications and the dated US listing are from Hamilton’s official H70545550 product page.
What the watch is like to wear and read
42 mm is a substantial field-watch size
The case measures 42 mm across and 11.45 mm thick. Whether that feels too large depends on your wrist, how you like a watch to sit, and your expectations for a traditional field watch. Monochrome’s 2020 hands-on review calls the size toward the upper end for the category and says the titanium case keeps it light and comfortable. That is the publication’s assessment, not a substitute for trying the watch on.
Titanium is the central material choice here: it is intended to reduce weight compared with a steel construction. The supplied information does not establish a measured weight comparison with a steel Khaki Field model, so consider the material preference rather than relying on a specific weight saving.
Recommended Free Tools
#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 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.
Simple, layered dial with no date
The black dial has no date window. Monochrome describes three visual zones: an inner 24-hour scale, large Arabic hour numerals in the next section, and an outer minute-and-seconds track. The hands and markers use luminous material. Hamilton specifies Super-LumiNova, but there is no independent legibility test under particular lighting conditions; if night-time readability matters, inspect the dial in the conditions you expect to use it.
Some Hamilton customer reviews on the product page praise comfort, while one reports concern about reflections from the crystal. These are individual comments, not representative testing. If glare could bother you, view the watch in person at different angles before buying.
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 42mm titanium 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 H-shaped 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, reserve and water resistance
The H-10 is an automatic, three-hand movement with no date display. Hamilton states an 80-hour power reserve and a Nivachron balance spring. The reserve is a manufacturer specification, not an independent measurement; it means the stated duration between a full wind and the movement stopping, subject to the watch being fully wound.
Hamilton rates the watch to 10 bar / 100 m and gives it an open case back. The rating is the published specification; follow Hamilton’s care guidance and ensure the crown is properly positioned before water exposure. Water resistance is not a promise that every watch remains sealed indefinitely, since seals can age or be affected by service and impact.
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 titanium 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 H-shaped 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 strap fits the H70545550?
The stated lug width is 20 mm, making that the starting point when shopping for a replacement strap. Hamilton supplies the watch on cow leather strap reference H6007051251 with an H-buckle. A third-party 20 mm strap may differ in attachment, thickness, taper or buckle fit, so confirm compatibility with the watch and the buckle you intend to use.
How it compares with the black PVD titanium sibling
Hamilton’s related reference H70665533 uses black PVD-coated titanium. In a June 2020 comparison, Monochrome describes it as sharing the 42 mm format and H-10 movement with H70545550, while adding a black-coated case and fully black dial. That article establishes the historical design relationship, not whether H70665533 is currently available or what it costs today. Check current listings by exact reference before treating it as an alternative.
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 titanium 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 H-shaped 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 Khaki Field Titanium Auto worth it?
The H70545550 makes most sense for a buyer who wants a titanium-cased, no-date automatic with a long stated reserve, a legible military-style dial layout and a sapphire crystal. Its 42 mm diameter may be the deciding drawback for someone seeking a smaller, traditionally proportioned field watch. Consider trying it on, checking whether the dial works in your usual lighting, and comparing its current regional price with your budget.
Hamilton’s US page listed the watch for $1,195 and in stock on October 7, 2026; price and stock can change. Before ordering, confirm the exact reference H70545550, seller, regional warranty terms and current price on the listing.
Free tools Windows power users keep installed
One-click scans. No signup required.
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 42mm titanium case, a blue 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 H-shaped 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.
