28ISO Enamel

Case material
White gold
Bracelet strap
Pin buckle
Water resistance
30 m
ø 39 mm
12.30 mm
Manual-winding mechanical
Power reserve: 55 h, 18'000 variations / hours
Hours, Minutes, Seconds, Special escapement
Price excl.VAT
98'000 CHF


Particularity of the 28ISO watch: have an original display of hours and minutes.

The hours and minutes display functions as follows :
Each hour, the hands are superimposed, regardless of the time.
Every half hour, the 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 hands of hours and minutes, one with respect to the other is always the same according to the minutes, and this, whatever the time.

M. Daniel Kahneman is world’s leading psychologist, Nobel Prize in economics for creating the field of Behavioral Economics. He has written the book called Thinking : Fast and Slow which describes the human behaviour with System 1 and System 2.
Telling time when looking at a wrist watch is a pure System 1 activity- a glance is enough because the "code" is so deep and familiar that in an instant you "know" the time without thinking hard about it.  But the ISO breaks that code - it is a System 2 watch.  You cannot in an instant read the time you have to switch to System 2. This 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 ISO because your attention is much higher.  You definitely have a deeper intellectual relationship with this watch because System 1 does not work.

The Voutilainen 28ISO 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 28ISO was designed, built, fabricated, finished and assembled in its entirety in Voutilainen workshops. The design and philosophy of the movement combines respect for longevity and precision with classical watchmaking tradition.
The movement has a very large balance wheel manufactured in-house, allowing perfect regulation of the watch to within strict tolerances.
To equip such an exceptional timepiece, a very rare and unique balance- spring system has been used. The exterior of the spring uses a typical 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 lever 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 within exceptionally uniform tolerances. All finishing work on the main plate and bridges is made by hand to achieve the highest possible levels of surface finish.
Screws and all steel parts are finished and polished by hand.

Top of all that dial is engine turned by hand. In center and small seconds has grand feu enamel in green color.