?Upgrade design?-The plant self watering spikes are designed with fixed bracket, can protect self watering device from wind, rain and collapse during using it. The upgrade regulating switch design, seamless connect the tube, effective prevent leaking. ?Control water volume?-Our self watering device design with adjustable control valve switch, which can control the dripping speed 0-60s/drip, offering different amounts of water to different plants and flowers, avoid watering too much or too less. And the switch has square interface, if you rotate switch, the whole switch will not rotate, very easy to achieve fine adjustment of the water flow. ?Easy to use?- To install without any tools, you just connect the fit water bottle with device, and insert the self irrigation watering drip devices into the flower pot, poke some small hole in the bottom of the bottle for exhaust, and then open the control valve to regulate wter flows. ?For most sizes of bottles?-This plant watering devices are made of ABS plastic, which is safe and environmental friendly. Our self watering system for plants have inclined reverse plug-in interface design, will compatible with 0.8~1.2 inch calibers beverage bottles such as Dr.pepper, Pepsi, Coca-Cola, Deet Coke, Aqufina or other beverage bottles. ?Wide application?- This watering device suit for potted plants, houseplants, patio plants, hanging baskets, desk pots, hanging plants and outdoor gardens. You can enjoy your vacation and business travel and let our watering device to take care of your lovely plants.