The piece in question features a triple 18k gold case, a manufacture caliber, an enamel dial with a four-color tachymeter scale on a 1000 m base, and a single button to start, stop, and reset the countdown.

The Zenith chronograph caliber is a 19" movement, measuring 43.15 mm in diameter and 5.00 mm tall. It is equipped with 18 jewels, and features a column wheel for the chronograph functions and a micrometric adjustment of the index using a snail cam.
The entire movement has been restored and polished and is in 100% working order. Shipping is insured.