12/11/2014: After nine months unpleasant problem occurred repeatedly: total reset of the watch requiring an adjustment of all parameters. The root cause is not yet clear, a battery problem (surprise of a new product) or an electromagnetic interference issue when calibrating RF hour. The latter hypothesis is favored because the phenomenon was detected in the morning when the watch had spent the night near the mobile phone. Solution dismissed both devices at night. Nothing seems to work so far.