THREE SPARKLING FEATURES: [1]Conical bottle irrigation design suitable for 99% of the beverage bottles on the market. [2]An auxiliary holder was added to keep the plant watering spikes stable, windproof,anti-collapse [3]U-shaped switch interface, switch will not follow the rotation of the swith when adjusting the swith , the accurate mount of water delivery, make plants healthier EASY TO USE: Without any tedious installation, you just need simple assembly and drill some holes at bottom of bottle or cut it and then a regulating valve that can adjust the speed of the flow. this self watering spikes system ensure your plants hydrated. LONGER DURATION: On average, On average, a 1 liter bottle will last 10 to 12 days compared to most other self water devices last 2 to 5 days.a simple and effective way to get rid of plants when you away or have no time while you’re on vacation.