Head-to-Head Comparison

Hamilton Khaki Field Automatic vs Seiko Presage Cocktail Time SRPE15

Hamilton's field watch meets Seiko's timepiece

Quick Verdict

The Seiko Presage Cocktail Time SRPE15 ($250–$500) delivers Seiko In-House Automatic technology in the tier below the Hamilton Khaki Field Automatic ($500–$1,000). The Presage Cocktail Time SRPE15 measures 40.5mm and is rated 50m (5 ATM). The Khaki Field Automatic justifies its premium with Swiss Made heritage and Automatic H-10. Both represent excellent choices in the luxury watch category.

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Hamilton Khaki Field Automatic

Hamilton

Khaki Field Automatic

$500–$1,000

Seiko Presage Cocktail Time SRPE15

Seiko

Presage Cocktail Time SRPE15

$250–$500

Specifications Compared

FeatureHamilton Khaki Field AutomaticSeiko Presage Cocktail Time SRPE15
Price$500–$1,000$250–$500
Case Size38mm40.5mm
MovementAutomatic H-10Automatic Caliber 4R35
Caliber TypeAutomatic (ETA C07.611 base)Seiko In-House Automatic
Power Reserve80 Hours41 Hours
Water Resistance100m (10 ATM)50m (5 ATM)
CrystalSapphire CrystalHardlex Crystal
Case MaterialStainless SteelStainless Steel
OriginSwiss MadeMade in Japan

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Hamilton's design language vs Seiko's approach

The Hamilton Khaki Field Automatic features a Stainless Steel case at 38mm with Sapphire Crystal protection. The Seiko Presage Cocktail Time SRPE15 offers Stainless Steel construction at 40.5mm with Hardlex Crystal. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Hamilton

Automatic H-10 vs Automatic Caliber 4R35

The Khaki Field Automatic runs the Automatic H-10 (Automatic (ETA C07.611 base), 80 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Presage Cocktail Time SRPE15 uses the Automatic Caliber 4R35 (Seiko In-House Automatic, 41 Hours reserve) at 21,600 vph (3 Hz). The Khaki Field Automatic edges ahead on power reserve.

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Wearability & Fit

Edge: Hamilton

38mm vs 40.5mm — different wrist presence

At 38mm, the Khaki Field Automatic wears more compactly on smaller wrists compared to the Presage Cocktail Time SRPE15 at 40.5mm. Water resistance differs: 100m (10 ATM) vs 50m (5 ATM).

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Value & Cost of Ownership

Edge: Seiko

Seiko sits in the lower tier

The Hamilton Khaki Field Automatic sits at $500–$1,000 and the Seiko Presage Cocktail Time SRPE15 at $250–$500. On the specs that outlast any price: the Khaki Field Automatic uses Sapphire Crystal with 80 Hours, against Hardlex Crystal and 41 Hours on the Presage Cocktail Time SRPE15. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Hamilton

100m (10 ATM) vs 50m (5 ATM)

The Khaki Field Automatic is rated to 100m (10 ATM) while the Presage Cocktail Time SRPE15 handles 50m (5 ATM). The Khaki Field Automatic is better suited for water activities.

Our Verdict

Hamilton

Khaki Field Automatic

Choose the Hamilton Khaki Field Automatic if you prioritize Automatic (ETA C07.611 base) engineering, Swiss Made craftsmanship, and 100m (10 ATM) water resistance. At $500–$1,000, it delivers Automatic H-10 with 80 Hours power reserve.

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Seiko

Presage Cocktail Time SRPE15

Choose the Seiko Presage Cocktail Time SRPE15 if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At $250–$500, the Automatic Caliber 4R35 with 41 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Hamilton Khaki Field Automatic and Seiko Presage Cocktail Time SRPE15 represent two distinct approaches to fine watchmaking — the Hamilton bringing Swiss Made tradition while Seiko delivers Made in Japan engineering.

Frequently Asked Questions

Neither is objectively better — they serve different preferences. The Hamilton Khaki Field Automatic ($500–$1,000) offers Automatic H-10 with 80 Hours power reserve, while the Seiko Presage Cocktail Time SRPE15 ($250–$500) features Automatic Caliber 4R35 with 50m (5 ATM) water resistance. Choose based on your priorities: Swiss Made craftsmanship vs Made in Japan engineering.
The Seiko Presage Cocktail Time SRPE15 offers better upfront value, sitting a tier lower at $250–$500. However, the Hamilton Khaki Field Automatic may justify its premium with superior finishing, heritage, or resale value.
Both are suitable for daily wear. The Khaki Field Automatic at 38mm with 100m (10 ATM) water resistance handles everyday situations. The Presage Cocktail Time SRPE15 at 40.5mm with 50m (5 ATM) is similarly capable. The Khaki Field Automatic uses Sapphire Crystal while the Presage Cocktail Time SRPE15 uses Hardlex Crystal.

How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.