The drainage function can be used when the watch is finished swimming or when the speaker is filled with water in daily life. The principle of the drainage function is to make the speaker vibrate by playing sound of a specific frequency and use the vibration to drain out the water that has invaded the speaker, protecting the speaker from being eroded by water. Method 1: Swipe up on the watch's main dial page to open the control panel, and tap the drain icon in the control panel; Method 2: After swimming, it will automatically enter the drainage process.