Seiko VJ21C
Factory specs
- Caliber
- VJ21C
- Made in
- Japan
- Jewels
- 0
- Accuracy
- -20 / +20 s/month
- Battery life
- 3 years
- Diameter
- 18.5 mm
- Height
- 2.28 mm
- Functions
- Hours, Minutes, Seconds
- Same family
- Seiko VJ20C
Small, slim three-hand quartz movement (hours, minutes and seconds, no date) for small and thin cases; the three-hand version of the VJ20C. TMI spec sheet (rev. 14.12.2021) and Cal. VJ2 series technical guide: 6¾ × 8 lignes, Ø18.50mm outside (18.20mm 12–6, 15.30mm 3–9), casing diameter Ø18.10mm (17.80mm 12–6), 2.28mm high including the battery, 0 jewels, accuracy within ±20 s/month at normal temperature, 32,768 Hz crystal, step motor with load-compensated driving pulse, electronic circuit reset switch, second setting device (seconds stop for time setting, recorded here as hacking), antimagnetic ≥1600 A/m, SR621SW battery, battery life about 3 years. The VJ20C and VJ21C share every part except the battery connection (+) and the fourth wheel and pinion.
Watches with the Seiko VJ21C
| Watch | Price from | Movement | Dia. mm | Thick mm | Crystal | Micro-adjust |
|---|---|---|---|---|---|---|
 Pagani Design PD-YS020 |
$185 | Seiko VJ21C | 37 | 7 | Sapphire | — |