Adjustable Speed Design: The plant watering device with control valve can control the dripping speed. Because different plants have different absorption rates, you can adjust the traffic to 3 to 21 days or more according to the time needed, and can prevent excessive watering and make plants healthier, very good for scientific planting. Automatic WateringThe latest plant watering design, with water storage design, effectively prevent water from leaking from the bottle mouth, thickened design, firm support structure, and prevent self-watering equipment from draining during use. The improved design of the plant watering devices can ensure that the water pressure is not affected by the lowered water level. Easy to UseThe plant watering system does not require any tedious installation, just tighten the drip irrigation watering devices and guide Then drive them into the ground, no nail required and no risk. Our auto watering system is ideal for watering the indoor flower, outdoor plant or your vegetables on vacation. Suitable for Most Bottles: Self-watering spike is suitable for many sizes bottles. You are no longer limited to 1.1 inch ID bottles. The new waterer is suitable for the bottle from 0.8 inch to 1.2 inch - The tilting bracket helps your self-watering system not to tilt, although the adjusted bottle is too big. Don't waste time trying to find the right bottle. Three Colors: Orange, Blue and Green. It is made of preferred eco-friendly PP plastic. It is 16.5 cm long, 5.5 cm wide and 30 mm in diameter. The plant self-watering system adopts plug-in interface design, and has good permeability. Ideal for short business trips or short vacations.