Hello, and welcome along!
The best way to tell exactly what you have, will be to get the model number from inside the case, and the calibre number from the movement.
For these you'll need to get the watch opened up by a professional, or if it has a screw on back (notches on the case back to allow a tool to be fitted), you should be able to open it yourself with a case opening ball (soft rubber children's ball that costs a few pounds/dollars).
If at all unsure, take it to a watch maker.
Cheers
Chris
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