
Photo by Pittigrilli (CC BY-SA 4.0), via Wikimedia Commons · Citizen Promaster NY0040-09EE, same reference line as the catalog ref (NY0040), different factory dial-color suffix. · CC-BY-SA-4.0
Citizen
Promaster NY0040
Ref. NY0040
1997–2021 · 41.5mm · caliber Citizen (Miyota) Cal. 8200: automatic, 21,600bph, 21j; hacking, hand-windable via crown at 8 o'clock; day-date
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Movement tier: unclassified
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
41.5 mm case. 20 mm lug width. Wears confidently on average to larger wrists. May overhang on slender builds.
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Authentication
The NY0040 shipped in several factory dial-color suffixes over its long run (09E, 09W, 17L among others); confirming which suffix matches the listing photos matters more than any counterfeit risk, which is low for this reference.
Known issues in the market
- Reviewers have reported the case diameter as both 41.5mm and 42mm across coverage; measure with a caliper rather than relying on a listing description.
- Mineral crystal scratches easily; many examples on the secondary market have a sapphire aftermarket replacement, which changes light reflection but is a common, disclosed mod rather than a red flag on its own.
- The day-date wheel and crown-hacking behavior depend on the Miyota Cal. 8200; a non-hacking movement or missing day/date function indicates a different caliber has been installed.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| caseback | Cal. 8200 designation | Citizen (Miyota) Cal. 8200, 21 jewels, visible or stamped on caseback | Different caliber designation; non-Miyota movement in an NY0040 case |
| crown | Crown position and function | Crown at 8 o'clock; hand-windable and hacking (seconds hand stops when crown is pulled out) | Crown in a different position; seconds hand does not stop when crown is pulled |
| crystal | Crystal material | Factory-original is mineral; a sapphire crystal indicates an aftermarket swap, common and not inherently a problem if disclosed | Listing claims factory sapphire without disclosing it as a modification |
| case | Unidirectional dive bezel | 60-click unidirectional bezel with clean alignment to the minute markers | Loose, bidirectional, or misaligned bezel |
Common legitimate replacements
- Crystal; mineral to aftermarket sapphire is the most common disclosed mod.
- Strap or bracelet; both rubber and OEM metal bracelet options existed across the run.
Expert resources: Fratello Watches Citizen coverage for spec comparisons. r/Watches and r/Citizen for dial-suffix identification threads.


