Try putting the watch down on a surface close to a window but without too much glare. Put the phone down on an upside down tumbler or half pint glass - whatever gives an image in focus and about 2/3 of the frame. Touch it very gently to take the shot. If you hold your phone or the watch, it's much harder to get a clear shot.
Mine is a very cheap Nokia and I just took the one below. It's not bad and has fair resolution.
View attachment 808325
Take it to a watchmaker to open it and get the photos. Good luck.
Cheers, Chris
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