Why your MoonSwatch chrono hand isn't at zero (and how to fix it)
On a planet MoonSwatch, pull the crown to B, step the 1/10 hand with the top pusher and the seconds hand with the bottom pusher, then pull to C and step the minute counter with the top pusher. Nothing is broken when a hand parks off zero. The watch has lost track of where its hands are, usually after a knock or a battery change, and this takes about two minutes.
Why it happens
A quartz chronograph like the MoonSwatch moves each chronograph hand with a small stepping motor. The electronics count the steps they send. They can't see where the hand actually points, because there is no sensor. If a hand gets nudged out of step, the watch's idea of "zero" and the real 12 o'clock drift apart. Every reset then returns to the wrong place, very precisely.
Typical causes:
- A knock or drop. A sharp shock can make a light hand slip a step or two.
- A battery change. Swatch's chronograph manual names battery changes and hard shocks as the moments when the hands need re-aligning.
- Pressing the pushers with the crown pulled out. With the crown out, the pushers become the adjustment tool. Pressing them "just to see" moves the hands' zero position.
Two things that are normal
- The 1/10-second hand at 2 o'clock doesn't sweep while the chronograph runs. Owner videos show it jumping into place when you stop.
- Pressing the bottom pusher while timing doesn't reset anything. It freezes the hands for a split time, and a second press lets them catch up. Swatch's chronograph manual describes this.
The fix (standard MoonSwatch planet editions)
The crown has three positions: A (pushed in), B (one click out) and C (fully out). Reset the chronograph first, so the hands are sitting at their "zero".
4. Push the crown back to A. Start, stop and reset: every hand should now land on zero. Holding a pusher instead of tapping it makes the hand travel faster. The interactive demo on our home page lets you practise this on a simplified Mission to Mercury.
Mission to the Moonphase (and the Pink and Super Blue versions)
These models replace the 1/10-second counter with a moon disc, and the routine is different. Swatch's manual labels the crown I, II and III and the pushers A (top) and B (bottom):
- Pull the crown to II.
- Press A once. The chrono seconds hand makes a full turn to show it is selected. Press B to move it until it points to 12: short presses step it, a long press runs it fast.
- Press A again to select the 60-minute counter, and use B to bring it to zero.
- Push the crown back to I, then start, stop and reset to check.
For the Mission to Earthphase we could not find a published re-alignment procedure we could verify, so follow the leaflet that came with it.
What about a mechanical Speedmaster?
A mechanical chronograph resets its hands with heart-shaped cams that physically snap each hand back to zero. You can't re-align them from the outside. If a Moonwatch's chronograph hand doesn't return to zero, that's a job for a service centre, not a button sequence.
If it keeps coming back
If the hands drift off zero again within days without any knocks, the battery may be weak, or the movement may need attention. Have a Swatch store or a qualified watchmaker look at it rather than repeating the procedure.