| Manufacturer | Seiko |
| Caliber Number | 6F22, 6F22A |
| Movement Type | Quartz, battery-powered |
| Production Span | circa 1980s~1990 |
| Diameter | 19mm x 22mm |
| Casing Diameter | 24mm |
| Height | 3.3mm |
| Jewel Count | 1 |
| Frequency | 32,768 Hz |
| Battery Cell | SR920SW (371) |
| Battery Life | ~3 years |
| Regulator? | None |
| Driving System | Step motor |
| Hand Count | 3 |
| Functions | Central hours; central minutes; central seconds; moonphase indicator at 6:00; date at 12:00 or 3:00 |
| Hacking Seconds? | Yes |
| Quickset Date? | Yes |
| Country of Manufacture | Made in Japan |
| Known Models | (Add your watch to the comments below…) |
The Seiko caliber 6F22 (6F22A) is a vintage quartz moonphase movement with a date.
Seiko 6F22 VS 6F29:
There is a similar caliber 6F29 with the main difference being that the 6F22 is a 3-hander (hours/mins/secs) and the 6F29 is a 2-hander (hours/mins).
Additional Resources:
network of watch sites
Recent Comments
Hi, can it be easily replaced by the NH36? Mine is broken, and for the…
You can also charge most of these watches with an old Braun electric toothbrush charger.…
Golby Watches Aquareef is a great watch and uses this movement
so it means every tag heuer with miyota 0S20 must be a replica? i had…
i have a tag heuer watch (monza calibre 36) from my uncle. and the movement…
Ancor made of plastics has advantages over the tradional material. Many watchmovents would not run…
Ancor made of plastic has advantages over the classic material.