ADJUSTABLE FLOW: Waterworks valve can control drip speed 0-60s/1 drip, slow drip takes 1-15 days, you can adjust the correct water flow according to the water needs of the installation. Ideal for a short business trip or a short vacation. AUTOMATIC IRRIGATION: Automatic irrigation system, deliver water directly to the roots of the plant, the U-shaped switch design can control the water flow without leaking, the system self-watering eliminates the worry of forgetting to water or unattended. You don’t have to water it every day. MULTI-SCENE APPLICATION: Irrigation system It can be used for potting soil, flowers, hanging baskets, herbs, vegetables and many other indoor and outdoor plants for watering, gardening, gardens and offices. Automatic watering can required for holidays. EASY TO USE: Fits most bottles,with an inside diameter of 1.1 inches, for example: Pepsi, Coca Cola, Deet Cola, Dr.pepper. No need to find another bottle to store water. No tedious installation; drill or cut holes