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Vingt-8 ISO




The Vingt-8 ISO watch bears an original display of hours and minutes, functioning as follows:

-At the top of each hour, the minute hand overlaps the hour hand.

-On every half hour, the minute and hours hands are opposite.

-The circle of minutes turns at the same rate as the hour hand for easy reading.

-The angle between the hour hand and the minute hand remains the same regardless of the time.

-The position of the hour and minute hands, with respect to the other is always according to the minutes, whatever the hour is.

Daniel Kahneman, world renowned psychologist and Nobel Prize laureate in economics for Creating the field of Behavioral Economics, published Thinking, Fast and Slow; In what he describes two different ways to brain form thoughts – System 1 and System 2.

Telling time by looking at a wrist watch is a result of a System 1 activity: a glance suffices because the « code » is so deep and familiar that in an instant you know the time without having to think twice.

The Vingt-8 ISO counters this code; Conforming to Kahneman’s System 2 behavior. You can not read the time; You have to switch to System 2. It now creates a more intimate and reflective relationship with this watch – it takes a few seconds now to « know » the time; But you know the time « better » with the Vingt-8 ISO because your attention is keener. You definitely intellectual-have a deeper relationship with this watch Because System 1 is no longer modus operandi .

The Voutilainen Twenty-eight wristwatch perfectly encapsulates the philosophy of Kari Voutilainen. Its elegant and strong mechanism is housed in a stylish and robust case. The in-house movement of the Twenty-Eight was designed, built, fabricated, finished and assembled in its entirety in Voutilainen workshop. The design and philosophy of the movement combines respect for longevity and precision with classical watchmaking tradition.

The movement has a very large scale manufactured in-house, allowing perfect regulation of the watch to within tolerances. To equip such an exceptional timepiece, a very rare and unique balance-spring system has been used. Phillips overcoil, while the internal curve uses the little known Grossmann curve.

The escapement makes the movement very special; This is the first watch to have two escapement wheels in such a configuration. The escapement wheels give a direct impulse to the balance through the impulse roller / jewel. This escapement is extremely efficient and requires much less energy than traditional lifting escapements, offering benefits in terms of longevity and stability in day-to-day use. The balance-wheel bridge is sublimely elegant, offering an unimpeded view of the escapement and balance. It also allows the enthusiast to admire the synchronized movements of the escapement wheels.

The watch is finished to the highest standards. The surfaces of pinions and wheels are completely flat and highly polished to exceptionally uniform tolerances. All finishing work on the main plate and bridges is by hand to achieve the highest possible levels of surface finish. Screws and all steel parts are finished and polished by hand.





In-house designed movement, main plate and bridges manufactured from German silver. 65-hour power reserve. New direct impulse escapement with two escapement wheels.


Free sprung balance (with Breguet/Grossmann balance spiral and rose gold timing weights, beating at 18,000 vph). Diameter of balance wheel is 13.60 mm. Wheels in rose gold.






Silver, engine turned by hand with applied gold numerals

Movement size

ø 30.00 mm x 5.60mm

Case size

ø 39.00 mm x 12.30mm


Case and crown in 18-carat gold. Sapphire glass front and back, with anti-reflection treatment on front. Matching tang buckle in 18-carat gold and hand sewn crocodile strap All design, manufacturing, construction, fabrication, hand finishing and assembly in the Voutilainen workshop

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  • Two Full-time master watchmakers in house
  • A Full-time master goldsmith in house
  • Custom Jewelry creations conceived and made in house
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