Frederique Constant Highlife Automatic COSC vs Hamilton Khaki Aviation Pilot Auto
Frederique Constant's timepiece meets Hamilton's pilot watch
Quick Verdict
The Hamilton Khaki Aviation Pilot Auto ($1,000–$1,500) delivers Hamilton/ETA Automatic technology in the tier below the Frederique Constant Highlife Automatic COSC ($1,500–$2,500). The Khaki Aviation Pilot Auto measures 38mm and is rated 100m (10 ATM). The Highlife Automatic COSC justifies its premium with Swiss Made heritage and Automatic FC-303 (COSC). Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Frederique Constant Highlife Automatic COSC | Hamilton Khaki Aviation Pilot Auto |
|---|---|---|
| Price | $1,500–$2,500 | $1,000–$1,500 |
| Case Size | 41mm | 38mm |
| Movement | Automatic FC-303 (COSC) | Automatic H-10 (ETA 2824-2 base) |
| Caliber Type | COSC-Certified Automatic | Hamilton/ETA Automatic |
| Power Reserve | 38 Hours | 80 Hours |
| Water Resistance | 50m (5 ATM) | 100m (10 ATM) |
| Crystal | Convex Sapphire | Sapphire Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Frederique Constant's design language vs Hamilton's approach
The Frederique Constant Highlife Automatic COSC features a Stainless Steel case at 41mm with Convex Sapphire protection. The Hamilton Khaki Aviation Pilot Auto offers Stainless Steel construction at 38mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic FC-303 (COSC) vs Automatic H-10 (ETA 2824-2 base)
The Highlife Automatic COSC runs the Automatic FC-303 (COSC) (COSC-Certified Automatic, 38 Hours power reserve) at 28,800 vph (4 Hz) frequency. The Khaki Aviation Pilot Auto uses the Automatic H-10 (ETA 2824-2 base) (Hamilton/ETA Automatic, 80 Hours reserve) at 21,600 vph (3 Hz). The Khaki Aviation Pilot Auto offers a longer power reserve.
Wearability & Fit
41mm vs 38mm — different wrist presence
At 41mm, the Highlife Automatic COSC has a bolder wrist presence compared to the Khaki Aviation Pilot Auto at 38mm. Water resistance differs: 50m (5 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Hamilton sits in the lower tier
The Frederique Constant Highlife Automatic COSC sits at $1,500–$2,500 and the Hamilton Khaki Aviation Pilot Auto at $1,000–$1,500. On the specs that outlast any price: the Highlife Automatic COSC uses Convex Sapphire with 38 Hours, against Sapphire Crystal and 80 Hours on the Khaki Aviation Pilot Auto. Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 100m (10 ATM)
The Highlife Automatic COSC is rated to 50m (5 ATM) while the Khaki Aviation Pilot Auto handles 100m (10 ATM). The Khaki Aviation Pilot Auto offers superior water resistance.
Our Verdict
Frederique Constant
Highlife Automatic COSC
Choose the Frederique Constant Highlife Automatic COSC if you prioritize COSC-Certified Automatic engineering, Swiss Made craftsmanship, and 50m (5 ATM) water resistance. At $1,500–$2,500, it delivers Automatic FC-303 (COSC) with 38 Hours power reserve.
Check Price on AmazonHamilton
Khaki Aviation Pilot Auto
Choose the Hamilton Khaki Aviation Pilot Auto if you value Hamilton/ETA Automatic technology, Swiss Made heritage, and 38mm proportions. At $1,000–$1,500, the Automatic H-10 (ETA 2824-2 base) with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Frederique Constant Highlife Automatic COSC and Hamilton Khaki Aviation Pilot Auto represent two distinct approaches to fine watchmaking — the Frederique Constant bringing Swiss Made tradition while Hamilton delivers Swiss Made engineering.
Frequently Asked Questions
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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.