Looking for a way to tell time that makes people do a double take ? Tell ’em it’s half-past the square root of 144, or quarter-past one to the 9th power. The Equation Watch is a fun watch for the math geek or teacher in your life. The classic black design looks good dressed up or down and matches pretty much everything in your wardrobe. A watch for a math geek or teacher. Confuse lesser beings with your superior math skills. Each hour is replaced with an equation equalling that number