The earphone jack namely LGY2109-3900F has a special structure that allows water will not destroy electronic components thanks to the use of circle ring placed between jack and smartphone case.
With that structure, the earphone fulfills IPX7 standard. It can survive in water with a deepness of 1 meter for 30 minutes. Currently, there are some smartphones in market witn IPX5 or IPX7 standard.
SMK Corp. hasn’t announced when the earphone jack will be available in market. The company also hasn’t said what smartphone vendors interested in using that earphone jack.