I was winding the watch once a day for three days before wearing it so I could get used to winding it. I wounded the watch 3 times (once per day) during three days. Last day I wounded the winding mechanism felt loose (broken) and I was not able to wind the watch again. 
I bought this watch on ebay and the person I bought the watch from said I should mail/return the watch to you for repair or replacement since it was under the two years warranty -- even thought it was less than 2 weeks since I bought it. 