Pull your old vintage watch out the drawers and I tell you what it is.
I need clear pictures front, dial, back and if possible the movement (motor).
If its a old watch than it probably has a screw back or a snap back.
Do not force this if it will not open! Giveaways for a screw back are grooves, teeth on the top or sides of the backcase. A snap back is mostly plain.
More interested in vintage and military watches but have a general knowledge of all the good brands.
Not really specialized in battery operated movements but you can try.