Apple Watch Ultra 4’s Water Rating Is Three Separate Certifications, Not One Number

Apple’s spec sheet groups Apple Watch Ultra 4’s 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... Weiterlesen