Water Eject is a process or utility that helps remove water from the speakers and other small crevices of smartphones or smartwatches using specially tuned low-frequency sound waves. These sound frequencies, typically around 165Hz, cause the water trapped inside to vibrate and push outward from the device’s components. Originally introduced by Apple Watch as a built-in “Eject Water” feature, this concept has since been embraced by developers who created web tools and mobile apps with similar capabilities for phones.