Water Timers Features: 1. Material: Made of plastic material, not easy to break, durable and strong. 2. Self-Watering Plant Stakes: Just fill with water, flip and insert the stakes into the soil, it will self-watering your plants automatically. 3. Easy to Install: Attach to a full plastic water bottle, then, poke a hole in the top of the bottle (allowing water to release), and stick plant watering near your plant's base. 4. Slow release control: Adjustable water output, adjust the water output according to different needs; plant waterer with control valve can adjust the drip rate from 0-60s/drip and the continuous drip time from 1-15 days. 5. Widely Used: Suitable for most beverage bottles, easy to use; very suitable for potted plants, house plants, garden plants, hanging baskets, deck planters, hanging plants and outdoor gardens. Attention: 1. If water can't flow fluently from bottle, please cut off the bottom of bottle. 2. As different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding. Color: Blue and Green;Random Color Material: Plastic Number: PR0186 Size: Blue:3.5*13.5cm/1.4*5.3in Green:3.5*13.5cm/1.4*5.3in Random Color:4.5*13.5cm/1.8*5.3in Please allow 0.5-1 inch error due to manual measurement. Package include: Watering device*1/5/6/12pcs(Bottles are not included!)