Ever heard of beer thirty? Try telling the time with something like the Equation Watch. No, the novelty gift won't help you cheat in class, but it sure can make you sharper with certain equations! The math watch has a specific equation that equals the number that it's replacing. Go on, impress the ladies or the gents (maybe) with a watch that's one of the perfect gifts for nerds everywhere! Hey, nerds are making a comeback (much to Ogre's dismay), and an Equation Watch is the right amount of geek-ness to not get beat up!