What iPhone X and Apple Watch Series 3 water-resistance ratings really mean

How water resistant are Apple’s latest iPhone and Apple Watch, and what do those ratings really mean?iPhone X and iPhone 8 and 8 Plus ship with official water resistance, thanks to a variety of gaskets, seals, and changes to the design intended to help it survive splashes and dunks. Apple Watch Series 2 and the newer Apple Watch Series 3 take that level of protection a step further, adding clever water expulsion, to allow it to survive regular submersion of swimmers

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What iPhone X and Apple Watch Series 3 water-resistance ratings really mean