I got the S51, bought it from Swatch in PJ. Was happy to own it but then realized the accuracy was terrible. My case was, if i wear it on the wrist from morning to night, the timing was ok,everything running fine, but when got home at night, left it on the table till morning, the timing slowed. In the next morning i realized that it lagged around 20-30minutes. I have tried to put it in several positions on the table but nothing's changed. I did realized the balance wheel slowed down when i picked up from the table. But when i wore it again, the timing maintained.
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