damina 15 rubis watch swiss made plaque or 10micro

DAMINA 15 RUBIS SWISS MADE
please help me because i can't find this watch anywere. it's written "plaque or 10 microns" on the late of the case. dimension are 21mm length /width 19 mm the case with crown.
have written on back of the movement part "213640 + 220529 patent"
on the back of the case is written "fond acier inoxydable 710"
thanks