Here's a beast of a Heuer chrono, the 1970s masterpiece Calculator.
Check out the minty dark navy blue dial with orange hands and subdial marker highlights. Massively cool.
This comes from the days before electronic calculators ruled the Earth.
The huge steel case is in excellent condition, 46mm across, excluding the signed Heuer crown by a 48mm from lug to lug.
This model, 110.633 model, carries the famous Caliber 12 automatic movement under the hood. It is keeping excellent time. All chrono functions work as they should. And, you can even use it as a calculator with the smoothly turning exterior rotating bezel. (Don't ask us how!)
Strap it on. Get ready for the stares.