When pulling the crown out to the outermost position to set the time, the minute hand may jump back a few minutes. Similarly, the minute hand may jump forward by a few minutes when the crown is pressed after the time has been set. This can be an issue when looking to set the exact time, or even be seen as a quality defect of Calibre 400 Series movements. In fact, it’s the opposite. To explain: the hand-setting mechanism and date correction function on Calibre 400 Series movements are designed and implemented using a combined component to reduce complexity and the movement’s susceptibility to malfunction. When the crown is pulled or pushed, the gears of the hand-setting wheels and the corrector drive come into or out of mutual engagement, whereby a rotational impulse can be delivered to the hand. This is necessary because the wheels are free-running, this system means there is no danger of excessive stress or wear. This behaviour of the minute hand is normal by design and is also found in other established movements. It does not affect a Calibre 400 Series movement’s class-leading durability, robustness, longevity or precision in any way, and nor does it mean there are any defective components that would need to be replaced. As for adjusting the time accurately, there’s a very simple fix. When adjusting your watch, advance it a few minutes past the exact time, and then wind it backwards, ie counterclockwise, to the correct time. When you push the crown back in, the minute hand will not jump.