Why water resistance does not mean suitability for showers or hot springs
Bathing, steam and hot springs differ from ordinary cool-water exposure. Temperature changes, cleaning products and dissolved chemicals can affect multiple parts of a watch.
Water resistance
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Water-resistance ratings: why a metre figure is not a diving permit
A water-resistance marking refers to capability under specified conditions. Real use also depends on the watch's intended purpose, current seals, controls and testing history.
