Seiko Prospex "Turtle" vs Seiko Prospex 62MAS Modern Re-interpretation
Two divers compared — $500–$1,000 vs $1,000–$1,500
Quick Verdict
The Seiko Prospex "Turtle" ($500–$1,000) offers In-House Automatic Manufacture precision in the tier below the Seiko Prospex 62MAS Modern Re-interpretation ($1,000–$1,500). The Prospex "Turtle" measures 45mm and is rated 200m (20 ATM) Diver. The Prospex 62MAS Modern Re-interpretation counters with Made in Japan craftsmanship and 200m (20 ATM) water resistance. Both are exceptional divers for their respective tiers.
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Specifications Compared
| Feature | Seiko Prospex "Turtle" | Seiko Prospex 62MAS Modern Re-interpretation |
|---|---|---|
| Price | $500–$1,000 | $1,000–$1,500 |
| Case Size | 45mm | 40.5mm |
| Movement | Automatic Caliber 4R36 | Automatic 6R35 |
| Caliber Type | In-House Automatic Manufacture | Seiko In-House Automatic |
| Power Reserve | 41 Hours | 70 Hours |
| Water Resistance | 200m (20 ATM) Diver | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire |
| Case Material | Stainless Steel | Stainless Steel with Super-Hard Coating |
| Origin | Made in Japan | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Seiko's approach
The Seiko Prospex "Turtle" features a Stainless Steel case at 45mm with Sapphire Crystal protection. The Seiko Prospex 62MAS Modern Re-interpretation offers Stainless Steel with Super-Hard Coating construction at 40.5mm with Sapphire. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber 4R36 vs Automatic 6R35
The Prospex "Turtle" runs the Automatic Caliber 4R36 (In-House Automatic Manufacture, 41 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Prospex 62MAS Modern Re-interpretation uses the Automatic 6R35 (Seiko In-House Automatic, 70 Hours reserve) at 21,600 vph (3 Hz). The Prospex 62MAS Modern Re-interpretation offers a longer power reserve.
Wearability & Fit
45mm vs 40.5mm — different wrist presence
At 45mm, the Prospex "Turtle" has a bolder wrist presence compared to the Prospex 62MAS Modern Re-interpretation at 40.5mm. Water resistance differs: 200m (20 ATM) Diver vs 200m (20 ATM).
Value & Cost of Ownership
Seiko sits in the lower tier
The Seiko Prospex "Turtle" sits at $500–$1,000 and the Seiko Prospex 62MAS Modern Re-interpretation at $1,000–$1,500. On the specs that outlast any price: the Prospex "Turtle" uses Sapphire Crystal with 41 Hours, against Sapphire and 70 Hours on the Prospex 62MAS Modern Re-interpretation. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) Diver vs 200m (20 ATM)
The Prospex "Turtle" is rated to 200m (20 ATM) Diver while the Prospex 62MAS Modern Re-interpretation handles 200m (20 ATM). Both offer identical water resistance ratings.
Our Verdict
Seiko
Prospex "Turtle"
Choose the Seiko Prospex "Turtle" if you prioritize In-House Automatic Manufacture engineering, Made in Japan craftsmanship, and 200m (20 ATM) Diver water resistance. At $500–$1,000, it delivers Automatic Caliber 4R36 with 41 Hours power reserve.
Check Price on AmazonSeiko
Prospex 62MAS Modern Re-interpretation
Choose the Seiko Prospex 62MAS Modern Re-interpretation if you value Seiko In-House Automatic technology, Made in Japan heritage, and 40.5mm proportions. At $1,000–$1,500, the Automatic 6R35 with 70 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Seiko Prospex "Turtle" and Seiko Prospex 62MAS Modern Re-interpretation represent two distinct approaches to the diver category — the Seiko bringing Made in Japan tradition while Seiko delivers Made in Japan engineering.
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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.