Ear (open) is rated IP54 for water and dust resistance under IEC standard 60529. The water and dust resistance is not permanent and may decrease over time.
We don't recommend wearing Ear (open) when showering, taking a bath or swimming. If your earbuds come into contact with any liquids, such as rain or sweat, use a dry, lint-free cloth to wipe them clean. Please don't use the earbuds or place them back in the charging case until they are completely dry.
Note: the warranty doesn't cover damage to the device caused by immersion in liquid.