Karsten Fräßdorf Spirograph Sport

La Chaux-de-Fonds based luxury watch brand KF (Karsten Fräßdorf) is reinventing its iconic Spirograph model with new features that push the limits of personalisation and timing to even greater heights.

Faithful to the original model, the Spirograph Sport highlights the tourbillon’s function. Visible through a broad dial aperture at 6 o’clock, this one-minute tourbillon is equipped with an escapement designed and developed 100% by the KF brand, as is the rest of the movement that drives it. The result is an entirely Swiss Made watch produced in La Chaux-de-Fonds.

This calibre has been designed and built around its balance-wheel to meet the standards of pure chronometric performance. With that in mind, this chronometric heart comprises two new innovations and was shaped by the vision and expert hands of a watchmaker, precision timer and construction developer driven by passion and conviction.

A precision instrument intended for daily use, this manual-winding calibre beats at a rate of 18,000 vibrations per hour. While making it more difficult to adjust the regulating organ, this frequency enables better management of the energy required for the watch to operate properly. It also reduces component wear and tear, thereby enhancing sustainability of precision. Thus, through the choice of materials and the specific construction of the calibre, the Spirograph Sport will be a lifetime companion and survive through subsequent generations, providing it is regularly serviced.

Equipped with a new elastic suspension system, the movement – which appears to be “flying” inside its case – can absorb shocks of up to 5,000 Gs. It displays considerable endurance with a 70-hour power reserve however, in order to improve chronometric accuracy; autonomy is deliberately reduced to 44 hours by means of the “Maltese cross” stopwork mechanism, which guarantees a more stable driving force.

The 45 mm-diameter steel case frames a transparently understated dial adorned with a “honeycomb” motif. This decoration, a nod to the coat-of-arms of La Chaux-de-Fonds where the watch is produced, contrasts with the bright yellow of the hands and transfer-printed Arabic numerals at 3, 9 and 12 o’clock. The same pattern is picked up in the engravings on the baseplate visible on the movement side through the transparent sapphire crystal caseback.

As usual at KF, all the aesthetics including strap, case alloy, dial motif and movement decoration – may be entirely personalised. In an ultimate playful touch, the colour of the hands and Arabic numerals applied to the dial are also left up to choice. As one might expect from an exclusive model of this kind, the Spirograph Sport will be issued in a limited edition of just ten.

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