Automatic watering: It works automatically to deliver water directly to the plant roots. The automatic drip irrigation system eliminates the worry of forgetting to water or leaving it unattended. You don't need to water it every day. Automatic sprinklers: Automatic sprinklers are equipped with a universal angle cover, which solves the problem of water leakage. Fits most beverage bottles. The holder's design is wind and rainproof, even if it's a large bottle, it won't fall down. ADJUSTABLE WATER FLOW: The valve can adjust the drip rate over 0-60s/1 drip. Slow dripping lasts 1-15 days. Depending on your vacation, you can manually adjust the flow to keep the irrigation going. An excellent irrigation solution for your vacation. You don't have to worry about the problem of watering your indoor plants and can enjoy the beautiful travel season. Easy to use: Suitable for most bottles with caps whose inner diameter is between 20.65mm and 22.5mm, such as: Pepsi, Coca Cola, Deet Cola, etc. Easy installation: Just drill a few holes in the bottom of the bottle or cut off the bottle's neck to allow air to circulate. Perfect for indoor and outdoor: Suitable for vegetables, indoor and outdoor gardens, hanging plants, small trees, shrubs, everyday aquatic plants, potted plants, indoor plants, herbs, garden plants, hanging baskets, sinks, etc.