Comparison
Seiko 18826555 vs Seiko 21407178
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 Prospex family.
- Both use a solar movement.
- Both cases are stainless steel.
| Spec | 18826555 | 21407178 |
|---|---|---|
| Brand | Seiko | Seiko |
| Family | Prospex | Prospex |
| Reference | 18826555 | 21407178 |
| Production start | unknown | unknown |
| Production end | unknown | unknown |
| Status | unknown | unknown |
| Retail price | unknown | unknown |
| Case material | Stainless steel | Stainless steel |
| Diameter | 41 mm | unknown |
| Movement | Solar | Solar |
| Caliber | unknown | unknown |