Why is it so difficult to regulate Miyota 9019?

[jolax]

Hello guys,

I bought a micro brand watch with Mioyota 9019 movement. I tried to regulate the movement to like -5/+5 spd but this movement is so hard to regulate. Does anyone know how accurate can this movement be regulated? Currently I am getting like +15 to +20 spd. Any help or advise would be appreciated. Thanks!

[JohnR725]

Always nice if we get a background story like? How are you trying to regulate it? In other words you have a timing machine or phone app or how do you know how fast or slow it's going? How do you know it isn't actually doing what you think it's doing?

I found some information on your watch and I'm quoting something from the link below "Citizen (Miyota) claims the accuracy of the caliber 9015 to be within -10~30 seconds per day." Basically this is the typical Japanese specification for their watches. It doesn't answered a lot of questions like what kinda timekeeping doesn't really do?

Then from your numbers above your slightly out of the range you're supposed to have.

 

 

https://calibercorner.com/miyota-caliber-9015/