[Compatible with Most Bottles]: The newly upgraded automatic watering head in 2020 can be used with 30mm European bottles. Don't waste time finding the right bottle, any bottle can feed the automatic watering system. [Latest Design]: It is made of PP plastic, durable and can be reused multiple times. [Automatic Plant Watering Tank]: Water volume control, a plant watering device with a new control valve can control the drip rate. You can adjust the flow for 1 to 15 days or more. [Versatile]: Whether it's indoor plants, outdoor plants, gardens, homes, or offices, this automatic watering system can ensure the humidity of the plants. And the watering device is very suitable for potted plants, houseplants, patio plants, hanging baskets, patio potted plants, hanging plants, etc. [Easy to Install]: No need for tedious installation, you just need to drill a hole in the bottom of the bottle and tighten the drip irrigation nozzle, then insert it into the soil without spikes or danger. Product Name: Smart Watering Device Material: High-quality environmentally friendly PP material Net Weight: 15g Delivery Quantity: 8pcs