This is really, really dope. As in really really.
A watch with a calculator's interface. It can make the work of addition, subtraction, multiplication, division right on your wrist. With an LCD display and silicone keyboard, quick calculations at work, school or the market place won't need you bringing out your posh phone anymore and risking theft. Just do it from your watch!
Extremely useful for adults and teenagers alike.
A Great Gift Item too! Think of someone you can add this value to and buy one for them. You will be fondly thought of, for this.