Grand Seiko Heritage SBGA413 vs Seiko Prospex SPB143
Specifications
Marked rows differ| Case | ||
| Case diameter | 40 mm | 40.5 mm |
|---|---|---|
| Thickness | 12.8 mm | 13.2 mm |
| Lug-to-lug | 47 mm | 47.6 mm |
| Water resistance | 100 m | 200 m |
| Movement | ||
| Movement | Spring Drive (automatic) | Automatic (mechanical self-winding, with hand-winding and hacking seconds) |
| Caliber | 9R65 | Seiko 6R35 |
| Price | ||
| Launch MSRP | $7,200 | $1,200 |
| Details | ||
| Accuracy | ±15 seconds per month (±1 second per day) | — |
| Beat rate hz | — | 3 |
| Bezel | — | 120-click unidirectional rotating, brushed steel with white markings and lumed pip |
| Bracelet | High-Intensity Titanium with folding clasp | Stainless steel three-link bracelet, 20mm at lugs tapering to 18mm, with three-fold clasp |
| Case material | High-Intensity Titanium | Stainless steel with super-hard coating |
| Complications | Date window at 3 o'clock; power reserve indicator | — |
| Crystal | Box-shaped sapphire crystal | Domed sapphire with anti-reflective coating |
| Crystal ar coating | Internal anti-reflective coating on box-shaped sapphire | — |
| Dial color | Soft pink | Charcoal grey with subtle sunburst finish |
| Limited edition | false | — |
| Lug width mm | — | 20 |
| Lume | — | LumiBrite |
| Movement jewels | 30 | — |
| Power reserve hours | 72 | 70 |
Sources
Verified · 5 referencesEvery spec on this page was independently checked against the sources below before publishing.