"The long-selling calculator watch from Casio, the CA53 ... The use of red for the mode indicator at the upper right evokes the image of the calculator's power light. Every detail, down to ...

What do you do with a circa 1985 Casio FX-451 calculator with a bad keyboard? Well, if you are [Poking Technology], you transplant the inside of the calculator to a new custom keyboard.

The CA53 collection – better known as the Casio Calculator watch – now comes in a finish dedicated to the original Casio personal calculator. While certain timepieces are widely regarded as ...