Quality Material: The plastic transparent watering ball is made of high-quality PVC material, and the remaining water can be clearly seen. Each size 6.32.1 inch, with a capacity of 80 ml. Suitable for indoor and outdoor plant self watering. The plants can be watered for up to 2 weeks to maintain the nutrients they need.<br> Steps for Usage: In the first step, put the bottom of the automatic watering device into the soil. In the second step, pour water into the watering device. In the third step, no additional operations are required, and water will automatically flow into the soil from the bottom. There are two ways to add water: you can unscrew the lid and add water, which is faster. Or you can pour the water directly into the top of the plant watering device without removing it from the soil.<br> Widely Used: The self watering spikes can be used indoors or outdoors, such as gardens, schools, offices, etc., watering bulbs can also be used for any plant size, such as hanging plants or garden plants.<br> Great Gift Idea: Watering bulbs are ideal gifts for plant lovers or gardeners. Watering balls are thoughtful and great gifts for them to decorate your garden or room while maintaining plant nutrition.