{"id":598535,"date":"2026-09-12T23:22:11","date_gmt":"2026-09-12T23:22:11","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/598535\/"},"modified":"2026-09-12T23:22:11","modified_gmt":"2026-09-12T23:22:11","slug":"apple-watch-ultra-4s-water-rating-is-three-separate-certifications-not-one-number","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/598535\/","title":{"rendered":"Apple Watch Ultra 4’s Water Rating Is Three Separate Certifications, Not One Number"},"content":{"rendered":"

Apple\u2019s spec sheet groups Apple Watch Ultra 4\u2019s water resistance under one heading, but it is three separate certifications, not one number. A 100-meter rating under ISO 22810:2010 covers named activities; a distinct EN13319 certification covers recreational scuba specifically, to 40 meters; and IP6X, sitting in the same row, is a dust rating that has nothing to do with water at all.<\/p>\n

\"Apple Ultra 4 paired with the Ocean Band. Image: Apple<\/p>\n

Apple lists all three together on the same line of its tech specs page. Treating them as one figure, rather than three, is where most confusion about this watch\u2019s water rating starts.<\/p>\n

Key facts
\nCertificationWhat it states for Ultra 4What it measuresISO 22810:2010100 m; \u201cswim, snorkel, scuba, high-speed water sports\u201dA water-resistance test standard for named activitiesEN13319Recreational scuba to 40 m; depth gauge accuracy of plus or minus 1 mA separate certification specific to recreational diving equipmentIP6X (IEC 60529)Listed alongside the two water figuresDust ingress protection, not water<\/p>\n

\"Apple Apple lists three separate certifications under one spec-sheet heading. Image: Apple
\nThe 100-meter figure is a named-activity standard<\/p>\n

Apple\u2019s ISO 22810:2010 rating for Ultra 4 is stated as covering swimming, snorkeling, scuba and high-speed water sports, at 100 meters. Series 12 and SE 3 carry the same ISO 22810:2010 standard at 50 meters instead. The standard itself is a durability test method; Apple\u2019s own wording ties the number to the listed activities rather than presenting it as a single depth a wearer should aim for.<\/p>\n

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Series 12 and SE 3 are rated to 50 meters under that same ISO standard, half of Ultra 4\u2019s number, and Apple lists the same named-activity wording for all three watches rather than a different activity list per model. The activities named do not change; only the depth figure attached to them does.<\/p>\n

\"Apple Apple Watch Series 12 carries a different water rating under the same ISO standard. Image: Apple
\nEN13319 is a different certification entirely<\/p>\n

Sitting apart from the ISO figure, Ultra 4\u2019s spec sheet states an EN13319 certification for recreational scuba to 40 meters, with a depth gauge accurate to within 1 meter. This is a dive-equipment standard, separate from the general water-resistance test above it, and Apple does not fold its number into the 100-meter figure. Series 12\u2019s own depth gauge, by contrast, is listed at 6 meters with no EN13319 certification attached.<\/p>\n

Apple\u2019s own listing keeps EN13319 as its own line rather than as a footnote to the ISO figure, which is one reason the two numbers, 100 meters and 40 meters, get conflated in casual reading. They describe different tests written by different standards bodies, and Ultra 4 is the only current Apple Watch Apple certifies against the second one at all.<\/p>\n

IP6X measures dust, not water<\/p>\n

IP6X appears on the same spec-sheet line as the two water figures, which invites the assumption that it adds something to the water story. It does not: the IP scale\u2019s second digit covers water ingress, and Apple\u2019s Ultra 4 listing gives no second digit at all, only the dust rating. Whatever water protection Ultra 4 has comes entirely from the ISO and EN13319 figures above, not from IP6X.<\/p>\n

None of this is a statement about what a wearer should or should not do in the water. It is a description of what three specific certifications state on Apple\u2019s own spec sheet, and how those three figures relate to one another rather than to any activity a reader might be planning.<\/p>\n

How the three figures line up against Series 12
\nCertificationUltra 4Series 12ISO 22810:2010 rating100 m50 mEN13319 recreational scuba certificationYes, to 40 mNot statedDepth gauge rangeAccurate to 1 m, to 40 mTo 6 mIP6X dust ratingYesYes
\nWhat Apple has not said
\nAny single combined depth figure that supersedes the three separate certifications.An EN13319 certification for Series 12 or SE 3.What, if anything, changes about these certifications with wear or age.A water rating for SE 3\u2019s depth gauge, if one exists, in the material we checked.<\/p>\n

Apple Watch Ultra 4 and Apple Watch Series 12 both reach stores Friday, September 18, each carrying the certifications above exactly as Apple\u2019s tech specs pages currently state them.<\/p>\n","protected":false},"excerpt":{"rendered":"Apple\u2019s spec sheet groups Apple Watch Ultra 4\u2019s water resistance under one heading, but it is three separate…\n","protected":false},"author":2,"featured_media":598536,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[352,221917,220308,111,139,69,145],"class_list":["post-598535","post","type-post","status-publish","format-standard","has-post-thumbnail","category-technology","tag-apple-watch","tag-apple-watch-series-12","tag-apple-watch-ultra-4","tag-new-zealand","tag-newzealand","tag-nz","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/598535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=598535"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/598535\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/598536"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=598535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=598535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=598535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}