Insert the device into the ground and set the water flow control switch to water the plants automatically, so you don't have to forget watering or leave it unattended, no need to water every day. Just add water to the water bottle in time. Plant watering system can control the dripping speed, 0-60s/1 drip, Slow dripping lasts 1-15 days. You can adjust the right water flow rate according to the plant's water needs . Ideal for short business trip or short vacation. It can be used to water a variety of indoor and outdoor plants, such as potted plants, flowers, hanging baskets, medicinal materials, vegetables, indoor plants, garden plants, hanging plants, etc. It is suitable for automatic watering devices in gardens, offices, houses or a large farm, etc. The upgraded self-watering device suitable for more than 95% of bottle mouths on the market and very convenient to use. for most plastic bottles suitable. It not only can be used for 1.1 inch bottles, any bottles with opening from 0.72 inch to 1.9 inch can be suitable. such as coca-cola bottle, soda bottle, even the wine bottle. It is made of ABS plastic, good resistance to heat and cold.