Recently after I woke up I noticed the second hand was not moving so I attempted to wind the watch up by the stem and it was tight and would not wind. It was approximately 5:45am when I found it was not working.  Up to that point all was working fine, I wore it every day since I received it and did not have any issues.  I followed instructions and made sure I did not adjust the date between 9pm and 3am and made sure it was between 6am and 6pm when date required adjustment.  