IWC 89900

Cal. 89900 is a high-end manufacture tourbillon flyback automatic chronograph with retrograde date produced by IWC since 2017.

Details

IWC had long used a family of automatic chronograph movements based on the Valjoux 7750. These were not only used in basic chronograph watches but complicated pieces, including grande complication and tourbillon watches. Two important complications on that base were the perpetual calendar and rattrapante modules that helped re-establish IWC as a maker of advanced watch movements. IWC had never had a flyback chronograph, however, and many buyers looked down at the pedestrian base on which these complications were developed. In 2007, IWC introduced a new Da Vinci Chronograph, Ref. 3764 with an all-new in-house movement developed by Kurt Klaus. The new Cal. 89360 was an advanced design with a flyback chronograph, efficient Pellaton winding, and power reserve of 68 hours, even while operating at 28,800 A/h.

In 2017, IWC paired this new movement with a tourbillon and retrograde date by pointer, resulting in this Cal. 89900. It remains in production as of 2019.

Applications

• IWC Da Vinci Tourbillon Retrograde Chronograph 3931 (2017-present)
• IWC Portugieser Tourbillon Retrograde Chronograph 3940 (2017) unique piece

Description: Automatic chronograph flyback tourbillon retrograde date movement Bi-directional winding (Pellaton winding system) Functions: Hours, minutes central Flyback chronograph seconds Open heart tourbillon at 6:00 Retrograde date by pointer at 9:00 Chronograph hours and chronograph minutes at 12:00 Data: Ø 30 mm Height 9.9 mm 42 jewels 375 components 28,800 A/h Power reserve 68 hours Production period: 2017-Present

Weblinks

• Calibre Family 89000, iwc.com