1. Adjustable flow rate: The water flow rate can be adjusted by adjusting the control valve. Our automatic plant watering equipment can control the speed. The continuous dripping time is 3-20 days. There is no need to worry about your plants withering during travel, business travel and vacation 2. Universal gardening tools: use these tools in potted plants or flowers at home, office or even on the balcony; Although effective and reliable, they are also suitable for watering all types of indoor or outdoor plants; It can be used all year round, rain or shine, and is suitable for outdoor or indoor use 3. Upgrade design: Our upgraded watering nail does not need to poke holes at the bottom of the bottle when it is used. Its appearance is also more beautiful. The most important thing is that it will not stop watering due to the influence of water pressure 4. Applicable to most bottles: the automatic drip nail is suitable for 90% of bottles, so you don't have to waste precious time to find the right bottle. Before installation, measure the inner diameter of the bottle, including the thread size 5. Multiple uses: The adjustable plant watering device is applicable to aquatic plants, indoor and outdoor gardens, potted plants, herbaceous plants, hanging baskets, hanging plants, garden plants, flower pots, small trees and shrubs. You can use it with plastic bottles.