Seiko 8L21 Movement Details
Seiko caliber 8L21 is an automatic (with hand winding) watch movement. Production started around 2003 and production finished in 2007.
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| Sub-brands: | Brightz |
| Power reserve: | 50 hours |
| Accuracy: | +15/-10 seconds/day (Seiko "B" standard) |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | Yes |
| Rate: | 28,800 bph |
| Number of jewels: | 24 |
| Development division: | Shizukuishi Studio (Iwate Prefecture, Japan) |
| Notes: | Similar to cal. 9S51 but without the high-end finishing. |
| Related movements: | 8L35 9S51 |