Seiko Presage SSA425 Open Heart vs Rado True Square Automatic
Two timepieces compared — ~$460 vs ~$2,450
Quick Verdict
The Seiko Presage SSA425 Open Heart (~$460) offers Seiko In-House Automatic precision at $1,990 less than the Rado True Square Automatic (~$2,450). The True Square Automatic counters with Swiss Made craftsmanship and 50m (5 ATM) water resistance. Both are exceptional timepieces for their respective price points.
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Specifications Compared
| Feature | Seiko Presage SSA425 Open Heart | Rado True Square Automatic |
|---|---|---|
| Price | ~$460 | ~$2,450 |
| Case Size | 40.5mm | 38mm (Square) |
| Movement | Automatic Caliber 4R38 | Automatic ETA C07.611 |
| Caliber Type | Seiko In-House Automatic | Powermatic 80 (ETA-Based) |
| Power Reserve | 41 Hours | 80 Hours |
| Water Resistance | 50m (5 ATM) | 50m (5 ATM) |
| Crystal | Hardlex Crystal | Sapphire (Anti-Reflective) |
| Case Material | Stainless Steel | Monobloc High-Tech Ceramic |
| Origin | Made in Japan | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Rado's approach
Movement & Performance
Automatic Caliber 4R38 vs Automatic ETA C07.611
Wearability & Fit
40.5mm vs 38mm (Square) — different wrist presence
Value & Cost of Ownership
Seiko is $1,990 more affordable
Water Resistance
50m (5 ATM) vs 50m (5 ATM)
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 ~$460, it delivers Automatic Caliber 4R38 with 41 Hours power reserve.
Check Price on AmazonRado
True Square Automatic
Choose the Rado True Square Automatic if you value Powermatic 80 (ETA-Based) technology, Swiss Made heritage, and 38mm (Square) proportions. At ~$2,450, the Automatic ETA C07.611 with 80 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Seiko Presage SSA425 Open Heart and Rado True Square Automatic represent two distinct approaches to the timepiece category — the Seiko bringing Made in Japan tradition while Rado delivers Swiss Made engineering.
Frequently Asked Questions
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