Made of ABS plastic, this automatic irrigation device is designed for indoor and outdoor plants. When the soil is dry, water is released gradually and precisely. The drip stops automatically when the soil reaches adequate moisture. Liquid plant food can be added to support plant growth. Simply attach a clean plastic water bottle filled with water, screw it onto the device, and insert the spike into the soil. No need to keep a water bucket nearby. A 600ml bottle can last approximately 5 to 7 days. Multiple bottles can be connected for extended use. The total length is approximately 11.5cm, and the connector fits bottles with screw caps in three different sizes, with an outer diameter up to 5.2cm. Compatible with most standard plastic bottles up to 3 liters, including common brands. Suitable for use during business trips, vacations, or periods of limited access to plants. Ideal for individuals who need consistent plant watering.