Adjustable speed design: The plant waterer with control valve can control the dripping speed. Because different plants have different absorption rates, you can adjust the traffic to 3-21 days or more depending on the time needed and can prevent overwatering and make plants healthier, very good for scientific plants. Automatic watering: The latest plant watering design with water storage design effectively prevents water from leaking out of the bottle mouth, thickened design, strong support structure and prevents self-irrigation devices during use. The improved design of plant watering devices can ensure that the water pressure is not affected by the lowered water level Easy to use: the plant watering system plants does not require tedious installation, just tighten the drip irrigation devices and then insert them into the ground without the need for a nail and no danger. Our self-watering system is ideal for watering the indoor flower, outdoor plant or your vegetables on vacation. Fits most bottles: The self-watering chuck is suitable for bottles of many sizes . They are no longer limited to bottles with an inside diameter of 1.1 inches. The new waterer fits 0.8-1.2 inch bottle - The rocker bracket helps your self-irrigation system not tip over even if the custom bottle is too big. Don't waste time finding the right bottle. Three colors: orange, blue and green. It is made of preferred environmentally friendly PP plastic. It measures 16.5 cm long, 5.5 cm wide. The plant self-watering system features a plug-in interface design and has good permeability. Ideal for short business trips or short vacations.