Adjustable Flow Speed Design: The plant watering device with control valve can control the dripping speed of 0-60s/drip, and the sustained release drip lasts for 1-15 days, provide different amounts of water for different plants and flowers. Easy to Use: No any tedious installation, just connect a standard bottle with 1.1 inch diameter, then drill some holes in the bottom or cut the tail of the bottle to keep the air flowing, place a regulating valve that will adjust the speed of flow. Enjoy Your Holiday: Without worried your plants withered while enjoying your holiday with your family. Our automatic pot watering system is a helpful assistant for the gardening, you don’t have to take care of your plants every day. Multi-Scene Application: Whether indoor/outdoor plant or garden, home or office, this self-watering spikes system ensure your plants hydrated, perfect for potted plants, patio plants, hanging baskets, deck pots, hanging plants and more.