Comparison
Seiko HKF004J1 vs Seiko SPB387J1
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 belong to the Seiko King Seiko family.
- Seiko HKF004J1 is 2.7 mm larger (41 mm vs 38.3 mm).
- Both cases are stainless steel.
| Spec | HKF004J1 | SPB387J1 |
|---|---|---|
| Brand | Seiko | Seiko |
| Family | King Seiko | King Seiko |
| Reference | HKF004J1 | SPB387J1 |
| Production start | unknown | unknown |
| Production end | unknown | unknown |
| Status | Current | unknown |
| Retail price | unknown | unknown |
| Case material | Stainless steel | Stainless steel |
| Diameter | 41 mm | 38.3 mm |
| Seiko HKF004J1 is 2.7 mm larger | ||
| Movement | Automatic | unknown |
| Caliber | unknown | unknown |