1, Adjustable Valve Irrigation These automatic plant watering devices with control valve can control the drip speed 0-60s / 1 drip, slow release drops flow into the auto water stations, lasts 1-15 days or more, depending on the desired duration. 2, Materials This plastic bottle irrigation is made of plastic. Good resistance to cold and heat, safe and non-toxic. Long nose cone design allows easy access to the roots. 3, Easy to Use Drip irrigation bottle, quick installation, no need to rotate, just put it down, plant waterer, deliver water directly to the roots of plants, suitable for most plants. Easy flow control means your plants get the right amount of water. 4, Multi-scene Application Plastic bottle irrigation is suitable for your vegetables, indoor and outdoor gardens, hanging plants, small trees, shrubs, daily watering plants, potted plants, houseplants, herbs, garden plants, hanging baskets, sinks. 5, Ideal for Vacation It can take care of your plants when you are on vacation or on business. Don't worry, your plant will wither. Note: The data are all measured manually, please allow 1-3cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.