The quantity is sufficient to meet your daily need. This watering device is made from ABS, which have good permeability and can clearly see the amount of water inside the watering device. Fill the watering device with water and directly insert flower watering device into the soil. It will provide the water need by Plant everyday and help you takes care of flowers and Plant This watering device is unique and practical. It helps you takes care of Plant, but also decorates home, garden, and backyard. Suitable for kinds of potted Plant, indoor Plant and outdoor garden.