1. Material: Made of plastic material, not easy to break, and strong. 2. Self-watering plant stake: Just fill it with water, flip over and insert the stake into the soil, and it automatically water your plants. 3. Easy to install: Attach to a full plastic water bottle, then poke a hole in the top of the bottle (to allow water to release) and attach the plant watering sticker near the plant base. 4. Slow-down control: The water output can be adjusted according to different needs; the plant watering device with a control valve can adjust the dripping speed from 0 to 60 seconds per drop, and the continuous dripping time from 1 to 15 days. 5. Wide range of uses: suitable for most beverage bottles, easy to use; perfect for potted plants, indoor plants, garden plants, hanging baskets, deck , hanging plants and outdoor gardens. Colour:Blue Material:plastic Package Contents: 20 x watering machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.