Case #749 — Hamilton Khaki Automatic Ref. H70605140

Case #749 — Hamilton Khaki Field Auto 42 mm "Navy Sunray"

Ref. H70605140

Status: Available

Condition: Like New Pre-Owned

Scope: Box, Papers, and Cards

Year: 2026

🔎 Case Notes

The field watch is usually an exercise in restraint: matte dial, painted numerals, nothing that catches the light. This reference quietly breaks that rule. Hamilton pairs a navy sunray dial with a snailing effect on the hour ring, so the dial reflects light while carrying texture and depth — the familiar military layout, rendered with a degree of finishing that field watches rarely receive.

The result is a watch that reads as a tool piece in daylight and as something closer to a sports-dress watch under lamplight. Luminous silver-tone hands and Arabic hour numerals sit above a minute track on the outer rim, a 24-hour scale on the inner rim, and a date at 3 o'clock, with a red-tipped seconds hand providing the only deliberate flash of colour.

This example is a 2026 watch presented in Like New Pre-Owned condition, on the matching stainless steel bracelet with folding clasp, with no condition notes recorded at inspection. It arrives as Box, Papers, and Cards, and is currently sized to fit an approximately 8-inch wrist.

🕰️ The Evidence

• Reference: H70605140
• Model / Collection: Khaki Field — Khaki Field Auto 42 mm
• Year: 2026
• Case: Stainless steel
• Case Diameter: 42 mm
• Thickness: 11 mm
• Lug-to-Lug: 53 mm
• Lug Width: 22 mm
• Dial: Blue — central sunray effect with a snailing pattern on the hour ring and a 24-hour scale; date at 3 o'clock
• Crystal: Sapphire with anti-reflective coating
• Bezel: Fixed, polished
• Caseback: Open (display) caseback
• Movement: Hamilton Calibre H-10
• Movement Type: Automatic, self-winding (normal winding operation)
• Balance Spring: Nivachron
• Power Reserve: 80 hours
• Functions: Hours, minutes, seconds, date; 24-hour indication on the dial
• Water Resistance: 10 bar (100 m / 328 ft)
• Bracelet: Stainless steel bracelet (Oyster-style), 22 mm at the lugs
• Clasp: Deployant / folding clasp
• Bracelet Fit: Approximately 8 inches
• Condition: Like New Pre-Owned — no condition notes recorded at inspection
• Factory Warranty: Hamilton grants a 2-year international warranty from the time of purchase. As a 2026 example supplied with its card, this watch would be expected to remain within that period, subject to the exact dated, stamped card and Hamilton's warranty terms
• Included: Box, Papers, and Cards

🌟 Collector Provenance

The Khaki Field is the anchor of Hamilton's modern catalogue, and the 42 mm automatic is its most visible expression. It descends directly from the military watches the brand supplied during the two World Wars, and Hamilton still frames the collection as a tribute to the original soldier's watch. That lineage is the reason the design language — Arabic numerals, inner 24-hour track, high-contrast handset — has survived essentially unchanged while almost everything else about the watch has moved forward.

What has moved forward is the engine. The H-10 automatic calibre delivers up to 80 hours of power reserve, and is paired here with a Nivachron balance spring for improved resistance to magnetic influence. A three-day reserve means the watch can sit from Friday evening to Monday morning and still be running — a practical distinction from the 38–42 hour movements that defined this price segment for decades.

This particular configuration is also a relatively recent arrival. The H70605140 debuted in 2025 as part of an expanded Khaki Field lineup of nine new references, and while the 42 mm Khaki Field Auto appears in black, green and silver dials and on leather or NATO straps, the navy sunray dial on the matching steel bracelet is one of the less commonly encountered pairings on the secondary market — and the one that moves the model furthest from pure military utility.

🌟 Design Provenance

Field watches are traditionally built to be read, not admired. The dial here is a deliberate departure: a sunray centre, a snailed hour ring, and a polished bezel framing both. The combination adds visual depth to the 24-hour scale rather than flattening it, and the navy tone shifts noticeably with angle — closer to black in shadow, distinctly blue in direct light.

The case supports the shift. Hamilton finishes the steel case and bracelet with a mix of brushed and polished surfaces, which gives the watch more presence on a shirt cuff than a bead-blasted military piece would ever have. The display caseback completes the argument: this is a field watch designed to be looked at as well as used.

🧾 From the Case File

At 42 mm wide, 11 mm thick, and 53 mm lug-to-lug, this wears as a genuinely flat, broad watch rather than a tall one. The 11 mm profile is the number that matters day to day — it slides under a cuff without argument, which is not something every 42 mm automatic on a steel bracelet can claim.

100 m of water resistance covers swimming, rain, and ordinary carelessness. The sapphire crystal is anti-reflective coated, which matters on a dial with this much surface interest — the sunray finish stays legible rather than disappearing into glare. The 22 mm lug width is an advantage for anyone who likes to rotate straps: it is among the most widely supported sizes available, so the bracelet can come off for a NATO or leather and go straight back on.

The practical case for this example is completeness and condition. It is a 2026 watch in Like New Pre-Owned condition with no flaws recorded at inspection, supplied with its box, papers and cards, and expected to remain within Hamilton's 2-year international warranty period subject to the card's dating. It is already sized for an approximately 8-inch wrist, with links available to resize downward.

Buy with Confidence

BST guarantees the authenticity of every watch we sell and provides a 30-day mechanical performance guarantee under normal use.

Accuracy may vary with age and service history, and water resistance is not guaranteed unless specifically stated and pressure-tested.

🗝️ BST Verdict

A current-generation Khaki Field Auto in its most refined configuration: navy sunray dial, polished bezel, matching steel bracelet, and the 80-hour H-10 behind a display caseback. The military bones are intact; the finishing is what separates it from the rest of the line.

It is a like-new 2026 watch with full accompaniment and remaining factory warranty coverage, without the showroom markup — on a bracelet configuration that is harder to find pre-owned than the strap variants.

👉 Every case deserves a closer look.