Flow rate control - water volume control, plant watering device with new Control valve, can control the drip rate, not affected by water pressure to stop the drip, plant watering device with control valve can control the drip rate 0-60s / 1drip, slow release drip lasts from 1-15 days. Easy and convenient- No need for any complicated installation, the upgraded model effectively prevents water leakage from the opening of the bottle, the thicker design eliminates the need to cut the end of the bottle at the bottom of the bottle, no tilting and falling down during use as the water level drops, just one bottle of water can be easily and smoothly dripped without worrying about stopping the dripping and watering the plants. The exact amount of water- provide different amounts of water for different plants and flowers and don't be a plant killer, as other waterers have either too little or too much water. In some plants, the old leaves just turn yellow and fall off. But if the new growth is yellow, it may be a sign of over-watering or underwater! Suitable for branded bottles-Dr.pepper, Pepsi, Coca Cola, Lipton, Deet Cola, Aqufina or will be compatible with 0.8~1.2 inch Dr.8~1.2 inch, 90% of the bottle mouth can be universal, you can rational use or recycling of suitable bottles, protect the environment. Suitable for many scenarios - enjoy your holiday with your family, leave your plants to me. Watering nails for your vegetable plants, indoor-outdoor gardens, everyday aquatic plants, potted plants, indoor plants, herbs, patio plants, hanging baskets, table pots, hanging plants, small trees, shrubs by yourself.