Da Vinci Perpetual 3921 Stainless Steel / Slate

In Context

At 43 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. At 15.5 mm it is a tall case, and it will catch on a cuff. The sapphire crystal will resist everything short of deliberate abuse. Rated to 30 m, it is protected against rain and splashes and nothing beyond that.

The movement winds itself from the motion of your wrist. 68 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

IW3921-03 is one of 3 executions of the IW3921 base reference. Underneath they are the same watch; what separates this one is a grey matte dial and a stainless steel case.

Self-winding movement with flyback chronograph, perpetual calendar and moon phase indicator.

4 other watches in the library run the IWC 89630.

IWC

Da Vinci Perpetual 3921 Platinum / Silver

IW3921-04 · 43 mm

IWC

Da Vinci Perpetual 3921 Red Gold / Silver

IW3921-01 · 43 mm

IWC

Pilot's Watch Perpetual Calendar Chronograph Laureus Charity Night 2019

IW3922-03 · 43 mm

IWC

Pilot's Watch Perpetual Calendar Chronograph 'Le Petit Prince'

IW3922-02 · 43 mm