hi there
if you remove the back of the watch and look inside next to the stem of the winder there should be a small plate just below it if the button is on your left (glass down)
on this plate there will be a small divet push a blunt object into this divet and pull out the button dont force it too much the stem and button should then come out
the plate and divet may only be visable when the button is pulled into the potion to alter the time in some models
luke
July 2008