Feature●Wide Compatibility: This automatic water spike can be used for a variety of purposes, including most Coke and Soda bottles (excluding mineral water bottles). Please note that other bottles may cause leakage due to inconformity of screws●(Provides opportunities to explore natural sciences) This product promotes the natural learning environment for children. By using atmospheric pressure, you can precisely adjust the water flow, save time and improve your educational experience●Adjustable Flow Rate: This plant water supply has a control valve that allows you to adjust the drop speed and supply a variety of water to suit your needs of flowers. This ensures optimal hydration without having to be too much or too little●Versatile and Convenient: This automatic water spike is suitable for a variety of plants both indoors and outdoors, so you can continue to water your plants while you are away. The 600ml bottle can be refilled slowly for 1-7 days, and the 1.5L water bottle can be used for 2-14 days depending on the flow speed●Environmentally friendly: This water spike is easy to install, eco-friendly and sustainable. Helps reuse common bottles, reduces waste and promotes an environmentally friendly environmentDescription