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Seiko Presage SSA425 Open Heart vs Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet)
Two timepieces compared — $250–$500 vs $10,000–$25,000
Quick Verdict
The Seiko Presage SSA425 Open Heart ($250–$500) offers Seiko In-House Automatic precision in the tier below the Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) ($10,000–$25,000). The Presage SSA425 Open Heart measures 40.5mm and is rated 50m (5 ATM). The Oyster Perpetual 31 (steel, green dial, Oyster bracelet) counters with Swiss Made craftsmanship and 100m (10 ATM) water resistance. Both are exceptional timepieces for their respective tiers.
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Specifications Compared
| Feature | Seiko Presage SSA425 Open Heart | Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) |
|---|---|---|
| Price | $250–$500 | $10,000–$25,000 |
| Case Size | 40.5mm | 31mm, 11mm thick |
| Movement | Automatic Caliber 4R38 | Automatic, no date; calibre 2232 (277200, about 55 h). Ask the seller to confirm the reference |
| Caliber Type | Seiko In-House Automatic | Rolex 2232, Superlative Chronometer |
| Power Reserve | 41 Hours | About 55 hours |
| Water Resistance | 50m (5 ATM) | 100m (10 ATM) |
| Crystal | Hardlex Crystal | Sapphire Crystal |
| Case Material | Stainless Steel | Oystersteel, smooth bezel |
| Origin | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Rolex's approach
The Seiko Presage SSA425 Open Heart features a Stainless Steel case at 40.5mm with Hardlex Crystal protection. The Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) offers Oystersteel, smooth bezel construction at 31mm, 11mm thick with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 4R38 vs Automatic, no date; calibre 2232 (277200, about 55 h). Ask the seller to confirm the reference
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 Oyster Perpetual 31 (steel, green dial, Oyster bracelet) uses the Automatic, no date; calibre 2232 (277200, about 55 h). Ask the seller to confirm the reference (Rolex 2232, Superlative Chronometer, About 55 hours reserve) at standard. The Oyster Perpetual 31 (steel, green dial, Oyster bracelet) offers a longer power reserve.
Wearability & Fit
40.5mm vs 31mm, 11mm thick — different wrist presence
At 40.5mm, the Presage SSA425 Open Heart has a bolder wrist presence compared to the Oyster Perpetual 31 (steel, green dial, Oyster bracelet) at 31mm, 11mm thick. Water resistance differs: 50m (5 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Seiko sits in the lower tier
The Seiko Presage SSA425 Open Heart sits at $250–$500 and the Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) at $10,000–$25,000. On the specs that outlast any price: the Presage SSA425 Open Heart uses Hardlex Crystal with 41 Hours, against Sapphire Crystal and About 55 hours on the Oyster Perpetual 31 (steel, green dial, Oyster bracelet). Service intervals are typically 5-7 years for both.
Water Resistance
50m (5 ATM) vs 100m (10 ATM)
The Presage SSA425 Open Heart is rated to 50m (5 ATM) while the Oyster Perpetual 31 (steel, green dial, Oyster bracelet) handles 100m (10 ATM). The Oyster Perpetual 31 (steel, green dial, Oyster bracelet) offers superior water resistance.
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 AmazonRolex
Oyster Perpetual 31 (steel, green dial, Oyster bracelet)
Choose the Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) if you value Rolex 2232, Superlative Chronometer technology, Swiss Made heritage, and 31mm, 11mm thick proportions. At $10,000–$25,000, the Automatic, no date; calibre 2232 (277200, about 55 h). Ask the seller to confirm the reference with About 55 hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Seiko Presage SSA425 Open Heart and Rolex Oyster Perpetual 31 (steel, green dial, Oyster bracelet) represent two distinct approaches to the timepiece category — the Seiko bringing Made in Japan tradition while Rolex 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.