ATUM POWER RESERVE

Versions

  • WHITE GOLD

    WHITE GOLD

  • ROSE GOLD

    ROSE GOLD


Reduction meets precision.

The ATUM Power Reserve gives the model family a new face. The power-reserve complication constitutes a prominent accent in the perfectly reduced overall appearance of the timepiece, making it a modern manifestation of pure watchmaking artistry.

The bi-colour bar-shaped display in the dial complements the pure aesthetics and class of the chamfered hour markers and manually sculpted lancet-style hands. This model melds timeless elegance, horological innovation, and the accuracy of Grossmann's 19th-century precision measuring instruments.

The novelties

The novelties

The small power-reserve complication was developed to meet the exceptionally stringent requirements imposed on precision measuring instruments such as marine chronometers. This prominent detail of modern manually wound watches identifies them as manifestations of high-end horology.

The balanced face of the ATUM Power Reserve is characterised by its manually sculpted, lancet-shaped hands that move along a crisply drawn minute scale. On the side of the case with the strikingly filigreed bezel, the pusher beneath the crown is the signature element of the Grossmann winder. Thanks to the power-reserve indicator, the delightful experience of operating the unusually smooth handsetting train may become a less frequent one. After all, the progressively red segment automatically prompts the use of the manual winder long before the movement stands still. And incidentally, the bicolour display of the ATUM Power Reserve is a visible hallmark of pure watchmaking artistry.

The dial

The dial

The bar-shaped aperture with the bicolour power-reserve indicator enriches the perfectly reduced dial of the model family with a distinctive feature of true precision measuring instruments. At the same time, the white/red accent beneath the brand logo reveals that the ATUM Power Reserve is a modern example of horological excellence.

The winding crown and the pusher

The winding crown and the pusher

The gently curved form and the tapered chamfer of the strap lugs enhances the eloquent silhouette of the case.

Aesthetic and functional – the circumferential groove makes it easy to pull out the crown. The pusher for the new handsetting train is set directly below the winding crown.

The hands

The hands

Crafted in-house, the hands express a high degree of individuality and contribute to the balanced proportions of the watch. Every Grossmann model family is endowed with a customised hand style that takes artisanal sculpting to the proverbial pinnacle.

For the ATUM Power Reserve, two different manufacture hand designs are matched to the colour of the case. The rose-gold version features three hands that are annealed to a brown hue. For the version in white gold, the hour and minute hands are made of polished stainless steel and the seconds hand is crafted from brown-annealed steel.

The saphhire-crystal

The saphhire-crystal

A sapphire-crystal glass protects the dial. It has an antireflective coating on one side to prevent viewdisturbing reflections of incident light. The extra-thick slightly cambered glass has a precision-ground chamfer that refracts the geometry of the succinct minute scale.

The butterfly clasp

The butterfly clasp

Centred on the inside of the wrist when worn, the optional available butterfly clasp makes it easy to put on and take off the watch.

Das MG calibre 100.2.

Das MG calibre 100.2.

Discover everything about the heart of the ATUM Power reserve.

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Versions

  • WHITE GOLD

    Reference: MG-000471
    Case: 750/000 white gold
    Dial: Argenté
    Hands: Hand-crafted, hour and minute polished stainless steel, seconds steel annealed to a brown hue

  • ROSE GOLD

    Reference: MG-000470
    Case: 750/000 rose gold
    Dial: Argenté
    Hands: Hand-crafted, steel annealed to a brown hue

Tech Specs

  • Movement Manufacture calibre 100.2, manually wound, adjusted in five positions
  • No. of parts 227
  • No. of jewels 26 jewels, 3 of which in screwed gold chatons
  • Escapement Lever escapement
  • Oscillator Shock-absorbed Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gerstenberger geometry
  • Balance Diameter 14.2 mm, frequency 18,000 semi-oscillations per hour
  • Power reserve 42 hours when fully wound
  • Functions Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher, power-reserve indicator
  • Special features Grossmann balance; lateral pusher for disabling the handsetting mode and starting the movement; bar-shaped power-reserve indicator with two-coloured display segment driven by a planetary gearing system; space saving and modified Glashütte stopwork with backlash;
    adjustment with Grossmann micrometer screw on a cantilevered balance cock; Pillar movement with 2/3 plate and frame pillars in untreated German silver, 2/3 plate, balance cock and escape-wheel cock hand-engraved; broad horizontal Glashütte ribbing, 3-band snailing on the ratchet wheel, raised gold chatons with pan-head screws; separately removable clutch winder; stop seconds for handsetting
  • Operating elements Crown in 750/000 gold to wind the watch and set the time, pusher in 750/000 gold to start the movement
  • Case dimensions Diameter: 41.0 mm, height: 11.65 mm
  • Movement dimensions Diameter: 36.4 mm, height: 5.4 mm
  • Case Three-part, precious metal
  • Dial Solid silver, hour markers in solid gold
  • Hands Hand-crafted, steel or stainless steel
  • Crystal / display back Sapphire crystal, antireflection-coated on one side
  • Strap Hand-stitched alligator strap with pin buckle in precious metal