Hi guys,
thanks for all the inputs.
I had the module out of the case (to test it) but wasn't able to open the hatch.
I've put some wd40 , didn't work . I put some ice on the plug for a few minutes , a little more WD40 and ...plok , the plug flew in the sky:BINGO!
before that I tried from the inside but , it didn't work and was a bit risky, forbidden to slip here
I put some picture of my watch now , the pics are poor , but the watch is great , with its original band according to the pics I've found on the internet.
It works perfectly.
I love the discret and chic look of it (what a massive and bling bling watch!)