Finally Lifesaver for your Christmas tree Exclusive water sensor with a nice star in black matt metal that indicates when the water level gets too low, you know exactly when to water again and the tree never has to be without water. The star is also decorative and if you prefer to hang it in the Christmas tree, it works just as well, otherwise you just hook it directly on your stand with the help of the hook that is on the back. Comes in a nice package of recycled kraft paper. Flashes when the Christmas tree is thirsty 1. Hang your star either directly in the Christmas tree or attach it with the hook directly to your stand 2. Place the end with the sensor in your Christmas tree stand 3. When the water goes below the sensor level, the star will flash MERRY CHRISTMAS