8 Jours – Eight Days. A Patented Device. A Masterpiece of Mechanics.

In the world of handwound mechanical watches, a rule of thumb prevails: between one winding and the next lies a night – or, at best, two days. The timepieces typically offer a power reserve of forty to fortyeight hours, requiring regular daily winding to ensure optimal performance.

The secret resides in a spring system patented by Eberhard & Co. In place of a single mainspring, as employed in virtually every other watch, the 8 Jours relies upon two overlapping, coupled springs. This dual-spring arrangement extends over a combined length of more than 1.5 metres – a unit that stores sufficient energy to drive the movement for a full week. The development of this system demanded months of precision work and a sequence of prototypes. The outcome is a movement that remains without peer in its category to this day. 

The elegance of the 8 Jours resides not only in its mechanism but equally in its appearance.  It`s round 41 mm steel case and the clearly structured dial express a refined aesthetic. The readily legible power reserve indicator – equipped with a patented operating device whose hand displays the remaining autonomy and indicates how long the watch will continue to keep time. 

To wear the 8 Jours is to experience, anew each day, what mechanical watchmaking signifies in its purest form: a living connection between man and his timepiece, made to endure over decades. The power reserve indicator – whose function is granted by a patented operating device – serves as a daily reminder that something vital is oscillating within the case. The 8 Jours is offered in several dial colours, including an elegant blue that underscores its character with particular force. 

The 8 Jours is intended for those who understand watchmaking not merely as a stylistic accessory, but as engineering as art. Discover the 8 Jours collection at MONTREDO. 

Shop noe the 8 Jours Collection on MONTREDO