If you've ever had trouble hanging something level, you're going to love this! This LED level literally tells you when you're off. Lights red when it's not level or plumb, yellow, when you're close, and green when you've nailed it! You can see it from almost any angle, even in the dark or over overhead. It's magnetic, super lightweight and runs on one AA battery. Plus, it works for both vertical and horizontal leveling so you can stop guessing and actually trust it! LTKHome