The Miyota caliber 6P24 is a quartz movement with 0 jewels. It is assembled in Japan and is considered a replaceable movement.
Miyota states the accuracy of this movement to be +/-20 seconds/month.
Setting and Reading the Moonphase
This is from the official Miyota documentation:
Different Moonphase Illustrations
The main feature of the caliber 6P24 is the moonphase indicator at 6:00. Miyota offers two design versions of the moonphase calendar disc:
6P24-00A – Darker background with a white moon and stars
6P24-00W – Navy blue background with a yellow moon and stars
At the time of this post, prices for the caliber 6P24 quartz movement were found online between $12.05 and $21.95 USD.
To order the caliber 6P24 from Miyota, the minimum is 1,000 pieces. The production lead time is about 2 months. For
There are a few calibers in the same family with a moonphase indicator at 6:00. Caliber 6P24 is considered to be the base caliber as it features the time and moonphase only without added complications. In addition to the moonphase at 6:00, the other variations include:
6P00 – Month subdial (3:00), day subdial (9:00), date subdial (12:00), month pusher at 2:00
6P20 – Month subdial (3:00), day subdial (9:00)
6P21 – Day subdial (9:00), date subdial (12:00)
6P80 – Month window (3:00), day window (9:00), date hand, month pusher at 2:00
Note: the caliber 6P80 height increases from 3.45mm to 3.85mm.