See where the balance staff is most likely to break after impact, and how shock systems protect those weak points.
Shock settings allow the pivot jewels to yield elastically under impact so the delicate staff tips are less likely to snap. After the shock, the system is designed to return to centre.
A broken balance staff is a specialist repair. After hard drops, professional inspection is safer than repeated home shake-tests.
Where does the balance staff usually break? At the delicate pivot ends, where the staff is thinnest and carries shock loads into the jewels.
Can shock protection prevent all damage? No. It reduces breakage risk, but severe impacts can still cause damage.
Why did my watch stop after a drop? Possible causes include shifted shock jewels, damaged pivots, or other impact-related faults. Inspection is needed.
Is a stopped watch after impact always a broken staff? Not always. But it is one of the classic failure modes and should be professionally diagnosed.