The MS-20UC updates Casio's long-running MS series desk calculator with a big, easy-to-read 12-digit display and a two-way power system — solar cell plus a backup button battery — so it rarely needs attention. A dedicated key handles time calculations directly, alongside standard tax and percentage functions most desk calculators leave out.

Available across a run of colorful finishes that won an iF Design Award, it's built for a desk that wants something more considered than the usual beige office calculator without paying for features nobody uses.