This simple gadget, at about the size of a pen works immediately and on its own to measure soil moisture. Never before have your plants had the ability to tell you what they need with such ease and efficiency. Designed to live in the soil next to your plant, the WaterPixie will never corrode and the battery life lasts up to two years. With its sleek and elegant design, the WaterPixie can be placed in any plant without toppling it over. No initial set-up required. Place it in the soil, and get a reading within 10 seconds. You can then move your WaterPixie around to other plants to take another immediate reading. But at such a great price, and with so many vibrant colors to choose from, why not get a WaterPixie as a personal guardian for every plant in your home, and never worry about killing a plant again.