The BOLDR Expedition Enigmath Coconico is a great watch suited for all of your mathematical adventures! 

With the Enigmath BOLDR goes back to the pre-digital age with this slide rule bezel math-wizard watch.  BOLDR has managed to capture a ton of practicality in this 41mm case, featuring a rotating internal bezel that can even be used as a slide rule to make calculations on the go.

A quick multiplication example of 9 x 12: align the unit index (red marker ‘10’, outer bezel) with ‘9’ on the inner scale. Locate ‘12’ on the outer scale and read the results directly opposite on the inner scale; ‘10.8’. Then, adjust decimals based on the expected value of 108.

All the goodness in this watch is being powered by the Japanese Miyota 9039 movement. Amazing lume? Got it. Of course the watch has sapphire glass (with an AR coating), 200m water resistance, sandblasted stainless steel case and a fine leather and canvas strap. Whether you're a math pro or not, it's simply a cool watch!