Engadget details how Apple Watch water lock prevents internal moisture damage
A recent analysis by Engadget outlines the mechanics of the Apple Watch water lock function, highlighting its role in protecting smartwatches from long-term degradation caused by chlorinated pools and submersion.
Engadget has published a detailed explanation of the Apple Watch water lock feature, describing how the technology safeguards the device against water pressure and residual moisture. The function disables the touchscreen to prevent accidental inputs caused by water pressure and actively ejects moisture from the internal speakers to aid in drying the device after submersion.
The feature is available on all Apple Watch models from Series 2 onwards and activates automatically during water exercises or manually via the Control Center. To manually engage the mode, users must press the side button to open the Control Center and select the water droplet icon. Once active, the screen becomes unresponsive to touch, ensuring that water pressure does not trigger unintended actions.
Unlocking the watch requires holding the Digital Crown for several seconds, which triggers a tone-based water ejection cycle. This process involves water streaming from the tiny side speaker holes, a mechanism that Engadget notes removes more moisture than users might realise due to the speed and small size of the droplets. The watch pauses and repeats this cycle until the process is complete, a design intended to prevent accidental initiation.
Engadget recommends the feature for models rated for deep diving, such as the Ultra series, to prevent long-term damage from residual water. The article suggests that water resistance weakens over time, particularly in chlorinated pools, and that keeping water out of the insides can help prolong the device's life. While standard Apple Watches are not rated for deep diving, the Ultra series is cited as safe for such activities.
The publication notes that the feature is essential for swimmers and those who expose their devices to rain or shower water. Although the watch may function without the feature if it has a high water-resistance rating, Engadget warns that water pooling inside can cause eventual damage. The article references usage on an Apple Watch Series 11 and mentions the Ultra 3, noting these models in the context of current product capabilities.
