Ole Tunnel is a smart vase that can tell people when to water and how much to water. But the principle is not that complicated. The inside and outside of the vase are equivalent to a double-layer structure. The inner layer is magnetically suspended inside the outer layer, and the inner layer is filled with water. Therefore, when the amount of water is enough, the inner layer will be pressed down, and when the amount of water is not enough, the inner layer will be pressed down. When the time comes, the inner layer will pop up, revealing a shiny green color, eye-catchingly reminding people that it’s time to water~
