Comparison
Seiko SJE103j1 vs Sinn 556 A
Sourced specs side by side. A value is highlighted only where one is objectively greater (power reserve); size and the rest are a matter of taste. unknown means no sourced value yet.
At a glance
- Both use an automatic movement.
- Seiko SJE103j1 is 0.1 mm larger (38.6 mm vs 38.5 mm).
- Both cases are stainless steel.
| Spec | SJE103j1 | 556 A |
|---|---|---|
| Brand | Seiko | Sinn |
| Family | King Seiko | Instrument Watches |
| Reference | SJE103j1 | 556 A |
| Production start | unknown | unknown |
| Production end | unknown | unknown |
| Status | Current | Current |
| Retail price | unknown | unknown |
| Case material | Stainless steel | Stainless steel |
| Diameter | 38.6 mm | 38.5 mm |
| Seiko SJE103j1 is 0.1 mm larger | ||
| Movement | Automatic | Automatic |
| Caliber | unknown | unknown |