Ingenieur SL Chronometer Stainless Steel / White / Bracelet

In Context

At 34 mm it is classically proportioned: the size a dress watch was understood to be for most of the twentieth century, and small enough to sit under a cuff. At 8.8 mm thick it is about average for a modern wristwatch. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 120 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 40 hours of reserve carries it overnight, but not through a weekend in a drawer. At 28,800 vph the seconds hand advances 8 times a second.

IW3521-01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a white dial with a stainless steel case.

Automatic movement with platinum rotor based on JLC 889/2