How can I found out what movement the watch is?

[avak101]

I'm interested in purchasing the watch below from a member, however he doesn't know what movement the watch is. Anyway, on finding out or just take the chance and hope that it'll last...

 

[DocEdelschick]

Can't tell for sure unless the case back is opened. Seems like a 21J. Cheap watch. But not sure.

 

[levelmanroger]

Does the seller have to hand-wind the watch, or is it an automatic?
Either way, with the small seconds it'd be virtually impossible to tell beat rate. So even a cheap (but reliable) 21J movement will serve you well.


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[Bonesey]

Datewindow and subdial placement leads me to believe either 21j or 23j asian movement. Not the correct one for the watch.