Large Capacity - the automatic drip irrigation system has a 3.5L large water bag and an adjustable precision flow valve, the IV drip bag can work about 3 to 20 days depending on the plant's water demand, temperature, humidity and soil composition; If you are busy and away from home, you can prepare the automatic plant waterer in advance to take care of your plants and keep them stay alive all the time Easy to Install - the top of the durable plant IV water bag is designed with a handle, you can easily hang the bag on a high hook; Just fill the water bag with fresh water, hang or place the water bag in a higher place, insert the watering spike into soil and adjust the flow valve to control the water flow speed, then the automatic watering device will start to work; They help you water the deep roots of plants and make irrigation more efficient Value Pack - the package contains 12 pieces drip irrigation plant watering system devices, which are ideal choices for travelers; They can help you water potted plants, flowers, bonsai trees and other places during vacation or business trip to better care for your plants; Sufficient plant watering devices can meet your daily use and replacement needs Automatic Watering System - the plant IV bags are made of quality plastic, the size is about 9.