The Miyota 6P00 is a quartz calibre produced by Miyota (Citizen), a Japanese movement manufacturer. It is a multi-function movement featuring four complication sub-dials — day at 9 o'clock, date at 12 o'clock, month at 3 o'clock, and moonphase at 6 o'clock — alongside central hours, minutes, and seconds. Operating at high quartz accuracy with a SR621SW battery rated for approximately three years, it provides reliable multi-complication display in a 10.5 ligne diameter, 3.45mm thick architecture with zero jewels.
In replica watches, the Miyota 6P00 is used in references where a full multi-complication dial layout — day, date, month, and moonphase simultaneously — is required. The quartz architecture makes all four complications reliably functional without the mechanical complexity that a true perpetual calendar movement would require. All displayed complications are driven by the movement and advance correctly — none are decorative. The month is adjusted via a dedicated button typically located at 4 o'clock on the case.
In Practice
- The 6P00 carries four functional complications — day, date, month, and moonphase — all driven by the quartz movement. The moonphase display tracks the waxing and waning of the moon and is adjusted via the crown in the first position clockwise. All four complications advance automatically under normal operation.
- Battery life is approximately three years using a SR621SW (364) cell. When the battery depletes, all complications stop simultaneously. Battery replacement restores full function — all complications require resetting after a battery change.
- Setting operations use two crown positions and a dedicated month button. First crown position clockwise adjusts moonphase; counter-clockwise adjusts date. Second crown position sets time and day, with seconds stopping for precise synchronisation. The month button — typically at 4 o'clock — advances the month display independently.
- A power saving function is built in — pulling the crown to the second position stops the seconds hand and reduces battery consumption during storage. This extends battery life during periods of non-wear.
- The 6P00 is interchangeable with the Citizen 6300 calibre. As a Miyota quartz movement, it is well-documented and serviceable by watchmakers familiar with Japanese quartz calibres — battery replacement and regulation are straightforward procedures.
Related Terms
Miyota Movement · Miyota 8N24 V3 · Mingzhu DG5866PB V2 · Super Clone
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For a full overview of movements used in replica watches — including how the Miyota 6P00 compares to automatic calibres — read: Replica Watch Movements Explained