Seiko Presage SSA425 Open Heart vs Timex Expedition Metal Field "Scout"
Seiko's timepiece meets Timex's field watch
Quick Verdict
The Timex Expedition Metal Field "Scout" ($50–$100) delivers Quartz (Battery) technology in the tier below the Seiko Presage SSA425 Open Heart ($250–$500). The Expedition Metal Field "Scout" measures 40mm and is rated 50m (5 ATM). The Presage SSA425 Open Heart justifies its premium with Made in Japan heritage and Automatic Caliber 4R38. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Seiko Presage SSA425 Open Heart | Timex Expedition Metal Field "Scout" |
|---|---|---|
| Price | $250–$500 | $50–$100 |
| Case Size | 40.5mm | 40mm |
| Movement | Automatic Caliber 4R38 | Quartz (3-Hand, Date) |
| Caliber Type | Seiko In-House Automatic | Quartz (Battery) |
| Power Reserve | 41 Hours | Battery |
| Water Resistance | 50m (5 ATM) | 50m (5 ATM) |
| Crystal | Hardlex Crystal | Mineral Glass |
| Case Material | Stainless Steel | Brass (Gunmetal Finish) |
| Origin | Made in Japan | Timex (USA Design) |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Timex's approach
The Seiko Presage SSA425 Open Heart features a Stainless Steel case at 40.5mm with Hardlex Crystal protection. The Timex Expedition Metal Field "Scout" offers Brass (Gunmetal Finish) construction at 40mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 4R38 vs Quartz (3-Hand, Date)
The Presage SSA425 Open Heart runs the Automatic Caliber 4R38 (Seiko In-House Automatic, 41 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Expedition Metal Field "Scout" uses the Quartz (3-Hand, Date) (Quartz (Battery), Battery reserve) at standard. The Presage SSA425 Open Heart edges ahead on power reserve.
Wearability & Fit
40.5mm vs 40mm — different wrist presence
At 40.5mm, the Presage SSA425 Open Heart has a bolder wrist presence compared to the Expedition Metal Field "Scout" at 40mm. Water resistance differs: 50m (5 ATM) vs 50m (5 ATM).
Value & Cost of Ownership
Timex sits in the lower tier
The Seiko Presage SSA425 Open Heart sits at $250–$500 and the Timex Expedition Metal Field "Scout" at $50–$100. On the specs that outlast any price: the Presage SSA425 Open Heart uses Hardlex Crystal with 41 Hours, against Mineral Glass and Battery on the Expedition Metal Field "Scout". Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 50m (5 ATM)
The Presage SSA425 Open Heart is rated to 50m (5 ATM) while the Expedition Metal Field "Scout" handles 50m (5 ATM). Both offer identical water resistance ratings.
Our Verdict
Seiko
Presage SSA425 Open Heart
Choose the Seiko Presage SSA425 Open Heart if you prioritize Seiko In-House Automatic engineering, Made in Japan craftsmanship, and 50m (5 ATM) water resistance. At $250–$500, it delivers Automatic Caliber 4R38 with 41 Hours power reserve.
Check Price on AmazonTimex
Expedition Metal Field "Scout"
Choose the Timex Expedition Metal Field "Scout" if you value Quartz (Battery) technology, Timex (USA Design) heritage, and 40mm proportions. At $50–$100, the Quartz (3-Hand, Date) with Battery power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Seiko Presage SSA425 Open Heart and Timex Expedition Metal Field "Scout" represent two distinct approaches to fine watchmaking — the Seiko bringing Made in Japan tradition while Timex delivers Timex (USA Design) 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.