How do u do this
Below is the link for manual to the C3 watch in question. From what I can tell, you need to do the following to set the time:
1. Push MODE button until you reach TIME MODE.
2. Hold the START/STOP button for 2 seconds. I believe the HOUR will start to blink at this point.
3. From here on, one of the buttons will scroll through the HOUR, MINUTES, 24HOUR FORMAT, and the other will be used to adjust them, I am just not sure which it is, but with the PDF MANUAL link below and trial and error, you will get it done in no time flat!
This link will take you to the C3 manual in PDF FORMAT:
This link is for nike support on the C3, by phone, email, even live chat!
Enjoy your Nike watch!