The Basics

The IWC Da Vinci Perpetual Calendar IW3921 was launched in late 2016 in anticipation of SIHH 2017. It marks a return of the style of the original 1985 Da Vinci Perpetual 3570, with a stepped round case and movable lugs. The IW3921 has a case with a diameter of 43mm and a height of 15.5mm, which houses the self-winding caliber 89360 with flyback chronograph and perpetual calendar. Reference IW3921-03 has a stainless steel case and a slate grey dial. It is fitted with a black Santoni strap.

Brand: IWC
Family: Da Vinci
Reference: IW3921-03 (aka: IW392103, 392103, 3921-03)
Name: Da Vinci Perpetual 3921 Stainless Steel / Slate
Produced: 2017
Limited: No

Below is a detailed look at IWC’s model IW3921-03 from Da Vinci watch family, including the price, case details and movement features.

IWC Da Vinci IW3921-03

The Details

IWC’s Da Vinci Perpetual 3921 Stainless Steel / Slate (IW3921-03 (aka: IW392103, 392103, 3921-03)) was originally released in 2017. This watch features a automatic movement beating at a frequency of 28800 bph (4 Hz) to provide a 68-hour power reserve when fully wound.

The Case

The stainless steel case measures 43mm in diameter and roughly 15.5mm thick. The round case is paired with a grey color dial with dauphine-shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. IWC’s Da Vinci model IW3921-03 is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Material: Stainless steel
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 43mm
Height: 15.5mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Da Vinci IW3921-03 movement is a powered by caliber 89630 made by IWC. The 51-jewel automatic movement is mm in diameter. Its balance wheel oscillates at 28800 semi-oscillations per hour or 4 Hz. This movement offers a 68-hour power reserve.

Type: Automatic
Brand: IWC
Caliber: 89630
Base: IWC 89360
Display: Analog
Diameter: mm
Jewels: 51
Reserve: 68 hours
Frequency: 28800 bph
Time: Hours, Minutes, Small Seconds
Chronograph: Chronograph, Flyback

The Price

How much does the IWC’s Da Vinci IW3921-03 cost? This watch was introduced in 2017 and has been in IWC’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.


For more information, visit IWC online.


  • Brand: IWC
  • Model: Da Vinci Perpetual 3921 Stainless Steel / Slate
  • Reference Number: IW3921-03 (aka: IW392103, 392103, 3921-03)
  • Limited: No

Case & Dial:

  • Material: Stainless steel
  • Glass: Sapphire
  • Back: Display
  • Diameter: 43
  • Thickness: 15.5
  • Lug Width: N/A
  • Dial Color: Grey
  • Indexes: Arabic Numerals and Dauphine-shaped hands
  • Water Resistance: 30 meters


  • Winding: Automatic
  • Brand: IWC
  • Caliber: 89630
  • Display: Analog
  • Diameter: mm
  • Jewels: 51
  • Power Reserve: 68 hours
  • Frequency: 28800 bph
  • Functions: Hours, Minutes, Small Seconds

About IWC

IWC logo

IWC is based in Schaffhausen, Switzerland, and was founded in 1868. Its signature lines are the Pilot’s Watches and the Portugieser, while other famous collections are the Aquatimer, Portofino and the Da Vinci. Many of IWC’s designs display a industrial type of beauty not often found in Swiss watchmaking. The same goes for its movements; while of very high standards, they are finished with an … engineers touch rather than that of an artist. One could very well say that IWC’s approach to watchmaking is more German in nature compared to many of its competitors; the ‘form follows function’ adagio is one held in high esteem in Schaffhausen. Notable watches and innovations created by IWC in the past include the digital ‘Pallweber’ pocket watch, the late 1930’s Portugieser, the 1985 Da Vinci with Kurt Klaus perpetual module, the split-seconds mechanism as designed by Richard Habring and the ceramic Da Vinci and Flieger 3705 – introduced many years before the material became fashionable. IWC also pioneered the use of titanium in wristwatches. In recent years, IWC has had a strong focus on in-house movements with prices rising accordingly. IWC is part of the Richemont group.

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