ISO 1413:2016, Horology — Shock-resistant wrist watches, states: "ISO 1413:2016 specifies the minimum requirements for shock-resistant wrist watches and describes the corresponding test method. It is based on the simulation of the shock received by a wrist watch while falling from a height of 1 m onto a horizontal wooden floor."
One metre onto wood is the whole of it. A marking of shock resistance under this standard says nothing about heavier impacts.
Edition 3, published April 2016, confirmed 2021. The title changed between editions: the 1984 edition read "Shock-resistant watches"; the current one specifies wrist watches.
Sources
Every statement above traces to one of these. Read on the date shown.
- Tier 1 ISO 1413:2016, Horology — Shock-resistant wrist watches, edition 3, published April 2016, confirmed 2021, source read 2026-09-26