Datejust 1601 — Hardstone Dial · Onyx

Rolex 1570

Same architecture as the 1560 at a higher frequency. Gained hacking secondsStop-secondsA time-setting function that stops the running seconds when the crown is pulled, commonly by arresting the balance in a mechanical watch. It allows synchronisation with a reference time signal. Also called hacking seconds; stopping does not itself return the hand to zero. in 1972 without a change of designation.

Automatic · 19,800 vph · 26 jewels