A reissue of the Braun ET66, designed by Dietrich Lubs and Dieter Rams in 1987, this pocket calculator carries the same "less but better" logic Braun applied across its clocks and watches: a simple rectangular body with convex, circular buttons, and nothing extraneous on the surface. An 8-digit single-line display covers basic arithmetic without pretending to be more than it is.

A protective slide cover keeps the buttons safe in a bag or drawer, and a single button-cell battery runs the whole thing — genuinely disposable, in the way calculators used to be before they became phone features.