I’ve spent the last 2 hours or so trying to find more details of the ISO 22810:2010 test requirements but can’t find anything online (unless you pay quite a substantial amount of money for a PDF: over $63 US!!). Does anyone know if this information exists online somewhere for free? Wikipedia only gives details on the older ISO 2281:1990 version. What I wanted to find out is if the tests for the 2010 ratings include a static pressure test to the actual stated WR marking. i.e. are 30m 50m and 100m watches static pressure test to the equivalent bar in pressure (approx 3 , 5 and 10 bar)? If so, for how long? Many Thanks in advance if somehow knows this information!