Got my first Parnis 43mm Power Reserve couple days ago. Beautiful watch with accurate time-keeping so far. However the seconds hand sometimes moves irregularly or no movement at all, but the minutes hand can still keep time accurately with the computer time. it seems like the seconds dial hand at 6 o'clock is totally not in sync with the watch movement, and not affect the time-keeping at all. Does it only have an aesthetic decoration function and no mechanical function at all? Any inputs from Parnis owners here?