This Standard specifies the classification and water resistibility of water resistant watches for general use (hereafter referred to as "water-resistant watches"). This Standard does not apply to water resistant watches for special use such as diving.
JIS B 7021:2013 Referenced Document
JIS B 7010 Parts of watches and clocks.Nomenclature
JIS B 7021:2013 history
2013JIS B 7021:2013 Water resistant watches for general use.Classification and water resistibility
1989JIS B 7021:1989 Classification and water resistibility of water resistant watches for general use