Features: 1. Stepless Speed Regulation: Grasp the dripping speed as needed, stepless speed regulation, and adjust the dripping speed by adjusting the tightness of the speed controller. Unscrew outward, the water output will increase, and tighten inward on the contrary. 2. Anti-Blocking Design: The inclined surface is raised and the anti-blocking design is upgraded. 3. Size: 28-30mm diameter plastic bottles can be used. Upgrade to universal size, no need to poke holes. 4. Double Water Outlet: Turbofan type double flow channel water outlet, reducing tension, not easy to block, and smoother water outlet. 5. Applicable To: One-piece installation-free automatic flower watering artifact. Suitable for all kinds of pots to add water to plants. Specification: Name: automatic waterer Material: PP Style: dark green dripper, light blue dripper, dark green dripper + bottle Size: about 20x6x6cm/7.87x2.36x2.36inch Function: automatic drip irrigation How to use: 01 Adjust the governor. 02Insert the waterer into the water bottle. 03 Hold the water bottle upside down. 04 Adjust the dripping speed after inserting into the flower pot. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.