Automatic Irrigation System for Vacation Plants: 3.5L water bags can hold about 3-20 days of work because it has a precise regulating valve that can control the speed of water flow. The supporting drip will take care of the plants for the entire duration of your vacation. 【Precise adjustment of the drip valve】 The dial for precise adjustment of the drip speed can better control the drip speed and keep the green plants properly watered. Easy to install: It only takes 5 minutes to make a homemade automatic watering system. 【Large capacity】 Made of high-quality materials, the sturdy water bag can hold 3.5 liters of fresh water, almost 1 liter of water. Save time for repeated water refills. Save water, use 70% less water than conventional spray and drip heads. Wide Application: Suitable for use with houseplants, potted plants, hanging baskets, patio plants, desk pots, hanging plants, outdoor gardens, home or office. Note: The data are all measured manually, please allow 1-3cm error, due