Manufacturer | S. Epson Corp. (Seiko) |
Caliber Number | AL21E |
Movement Type | Quartz, battery-powered |
Lignes | 6.75”’ x 8”’ |
Diameter | 15.3mm x 17.8mm |
Height | 2.99mm |
Jewel Count | 0 |
Frequency | 32,768 Hz |
Accuracy Rating | +/- 20 seconds/month |
Battery Cell | SR626SW / 377 (silver oxide, 1.55 V) |
Battery Life | 2 years |
Quartz Type | Tuning fork |
Regulator? | None |
Stem Part # | 0354788 (aka 354-788) / 0354787 (354-787) |
Hand Count | 3 |
Hand Sizes | 1.10mm (hours) / .65mm (mins) / .20mm (secs) |
Functions | Central hours; central minutes; central seconds |
Hacking Seconds? | Yes |
Country of Manufacture | Made in Japan |
Known Models | (Add your watch to the comments below…) |
The S. Epson caliber AL21E is a small size 3-hander quartz movement. Official documentation indicates that this caliber has been in production since at least 2014.
This is a true no-date movement with only two crown positions: neutral (against the case) and time setting mode (pulled out one click).
Replacement Prices:
At the time of this post, replacement prices for the AL21E were found online in the range of $2.70 USD to $8.95 USD.
Additional Resources:
Recent Comments
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