<p>The automatic watering ball is made of high-quality PVC, not easy to break. And with high transparency, you can clearly see the remaining water in the watering ball. It is very suitable for your vacation, enough water can be used for up to 2-3 days. The plant watering bulb will automatically water your plants, just fill the water in the watering ball and poke it into the soil, the water will slowly drain out and automatically water your plants, no settings required. The hole diameter is 0.39 inches (1 cm), when using these watering balls, first press the hole with your thumb, then slowly put it into the soil until the soil is pressed and then release (releasing your hand too quickly will cause the water to flow out quickly) You will receive 8 automatic watering devices, measuring 1.96 inches x 5.12 inches (3 cm x 15 cm), 4 green bulbs and 4 transparent bulbs, each with a water care capacity of 75 ml. It can be used for different plant times at the same time, so you can relax. This watering ball does not take up space and is suitable for indoor plants, hanging plants, potted plants, patio plants and outdoor plants, etc. Different plants require different amounts of water supply, and the angle can be adjusted according to the water needs of the plant. Color: Green + Transparent Material: PVC Size: 3 x 15CM Package Contents: 8 x Plant Watering Bulbs Only the above package contents, other products are not included. Note: Light shooting and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowable error is +/- 1-3cm. </p>