Watch is less than 1 month old. I followed first time wind instructions VERY carefully. The watch ran fine for 2 weeks; then quit and would not respond to a re-wind. Sent it back to Breitling. Have had it now less tha a week. Did'nt wear it for the last 24 hours and it stopped! thai time a few shakes has it running again. What's going on? Is my watch defective? HELP!!