Improved Plant Waterer: We've adopted a new design that allows you to adjust the water flow rate more easily and effectively. This plant waterer lets you control the drip rate from 0 to 90 seconds per drip, and continuous dripping can last from 1 to 16 days. No need to worry about your plants wilting while you're away on vacation. Suitable for Various Bottles: Our self-watering plant spikes are suitable for most beverage bottles on the market with an inner diameter of 0.8 to 1.9 inches, such as Coca-Cola bottles, soda bottles, orange juice bottles, etc. No need to worry about water pressure. No leaks! Easy to Use: No tools are required for installation. Simply attach the water inlet end of the self-watering spikes to the bottle opening, then turn the bottle upside down, add soil, and finally open the control valve. Furthermore, its cross-shaped design makes it easy to insert into the soil, and it's very stable and won't easily fall over. Wide Applications: Whether indoors or outdoors, at home or in the office, these plant watering devices ensure your plants receive enough water. The watering device is ideal for vegetables, potted plants, houseplants, hanging plants, aquatic plants, or any other type of plant. Worry-Free Planting: You don't need to tend to your plants every day; simply adjust the flow rate of the automatic plant waterer to meet the needs of different plants. It's perfect for watering plants while you're on vacation. Enjoy your holidays or travels and leave the plants to me!