Saturday, October 18, 2025

Moritz Grossmann – BENU Power Reserve Gold


Moritz Grossmann BENU HERITAGE Power Reserve in Rose Gold & White Gold 2025

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The fine art of the mechanism: Moritz Grossmann presents the new BENU Power Reserve with new details

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Progress in step with traditional values: the manufactory Moritz Grossmann believes the greatest virtue is to combine innovation with time-proven principles – and to do so with the highest quality, fine mechanisms and timeless design. 

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With the Benu Power Reserve model, this principled approach to enhancement can be seen in revised and updated details. The Benu Power Reserve is available in rose gold and white gold cases and features a new hand shape and exceptional dial decoration, amongst other things.

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A watch’s dial is its face. Its aesthetic follows rules that are passed down over time, although its roundness continually offers new ways for watchmakers and designers to apply their craft. Additional dials as well as surfaces and colours in different designs shape the personality of a watch.

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These are attributes that are used at the Moritz Grossmann manufactory, too, where the same values apply to the dial as they do during the engineering, production and decoration of manufacture movements: classic design, meticulous handicraft and subtle surface decoration.

Azurage: a new look for the dial

The appearance of the Benu Power Reserve has been refreshed with this mission in mind. It is the first time that the Moritz Grossmann linear power reserve indicator has been combined with Azurage decoration, a circular pattern of ultra-thin grooves which catch the light in an intriguing and appealing way.

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With the Benu Power Reserve, the outer ring – which is adorned by numbers and indices – is decorated with Azurage. The ring encircles the centre of the dial, which has a soft, matt surface featuring a fine texture. 

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The effect of this combination is emphasised by the dial’s silver shimmer in the colour argenté. The logo and minute scale have a distinctly subtle effect in their dark grey colour. The blue digits and indices are attached as appliqués and complemented by blue, tempered hands. 

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Their presence sees a new form of hand make its debut: hands which are made from steel in the manufactory and captivate with a slight curve that extends to an exceedingly fine tip. 

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After being bevelled carefully to add curvature to the surface, and after polishing, the hands are tempered and become blue. This is traditionally done with a thermal treatment.

Experience the mechanism: the power reserve indicator

With mechanical movements, there is one question more important than any other for the watch wearer: how long is the power reserve? 

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For hand-wound calibres in particular, the wearer needs to attend to the watch in good time to rewind the movement using the crown. 

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The power reserve indicator is a helpful addition for this task and, moreover, a charming detail. It turns the mechanism into a tangible experience and is a continual reminder that there is a piece of craftsmanship resting on the wearer’s wrist.

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Moritz Grossmann referenced the manufactory’s subtle and classic design perfectly with the power reserve indicator. It takes a linear shape in a small aperture under the ‘12’ on the dial, where a blue and white bar element driven by a differential wheel train can be seen. 

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When the movement is fully wound, a completely white bar is displayed and when the power reserve decreases, an increasingly coloured bar is displayed.

The movement: a calibre 100.2

The inside of the Benu Power Reserve is home to a calibre 100.2, an enhancement of the calibre 100.1. Thanks to the differential gear, it houses an additional mechanism for displaying the power reserve.

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The movement uses Grossmann’s manual winding with a pusher, a cantilevered balance cock with Grossmann micrometre screw, a separately removable winding module and the mass optimised Grossmann balance. 

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A sapphire crystal back on the reverse of the watch reveals the intricately finished components of the movement, showcasing the finest German craftsmanship from the Moritz Grossmann manufactory.

Rose gold or white gold case with a soft leather strap

The Benu Power Reserve is available in two versions, one with a rose gold case and another with a white gold case. 

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Thanks to its simple shape, the case is an expression of the classic Moritz Grossmann approach. The surface has been carefully brushed and possesses a matt sheen. 

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Characteristic details include the cross grooves on the crown and the slimline strap lugs. The latter ensconce the soft strap, which with the Benu Power Reserve takes the form of a grey band made of supple kudu leather with blue stitching to reflect the colour combination on the dial.

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TECHNICAL SPECIFICATIONS

Collection  BENU

Model: BENU Power Reserve Gold

Versions: 🔴 Price53’000 CHF excluding VAT 💰 

Reference: MG-003772 - Rose Gold

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Reference: MG-003599 - White Gold

Case
    Material: 18-carat rose or white gold
    Diameter: 41.0 mm
    Thickness: 11.65 mm
    Crystal/display back: Sapphire crystal, antireflective coating on one side
Dial and hands
    Dial: Argenté (outer ring decorated with Azurage); numerals and indices in the form of blue appliqués
    Hands: Manually crafted, steel, annealed to a blue hue
Movement
    Manufacture calibre 100.2 

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    Manual winding, regulated in five positions
    Diameter: 36.4 mm
    Height: 5.4 mm
    Number of parts: 227
    Number of jewels: 26, of which 3 in screwed gold chatons

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    Oscillator: Shock-absorbed Grossmann balance with 4 inertia screws and 2 poising screws,
    Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gustav Gerstenberger geometry
    Balance diameter: 14.2 mm
    Frequency: 18,000 semi-oscillations per hour
    Power reserve of 42 hours when fully wound
Special features
    Grossmann balance; hand setting override and start of movement with lateral pusher; bar-shaped power-reserve indicator with two-coloured display segment driven by a differential wheel train; space-saving modified Glashütte stopwork with backlash; adjustment with Grossmann micrometer screw on cantilevered balance cock; pillar movement with 2/3 plate and pillars made of 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 hand setting
Functions/Indications
    Hours and minutes
    Subsidiary seconds with stop second
    Grossmann manual winder with pusher
    Power-reserve indicator
Strap
    Hand-stitched calf leather with solid prong buckle in precious metal

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Moritz Grossmann Uhren

Moritz Grossmann, born in Dresden in 1826, was deemed a visionary among Germany’s great horologists. In 1854, his friend Ferdinand Adolph Lange persuaded the young, highly talented watchmaker to establish his own mechanical workshop in Glashütte. Apart from building a respected watchmaking business, Grossmann was committed to political and social causes. He established the German School of Watchmaking in 1878. Moritz Grossmann passed away unexpectedly in 1885, after which his manufacture was liquidated.
The spirit of Moritz Grossmann’s horological traditions sprang back to life in 2008 when trained watchmaker Christine Hutter discovered the venerable Glashütte brand and had it re-registered. She developed concepts and was inspired by the vision of reviving Grossmann’s legacy more than 120 years later with a particularly exquisite wristwatch. And she convinced private watch enthusiasts to support her in making this dream come true. On 11 November 2008, she incorporated Grossmann Uhren GmbH in Glashütte.
At Grossmann, gifted watchmakers are preserving traditions without copying historic timepieces. With innovation, superb craftsmanship, a combination of traditional and contemporary manufacturing methods as well as precious materials, they have created an “Origin of a new time” with their watches.  

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Press release - 2025
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PRESSE KONTAKT
GROSSMANN UHREN GmbH
Sandra Behrens – Head of Communications & Marketing
Uferstr. 1
Telefon: +49 35 053 32 00 20
Fax: +49 35 053 32 00 99
sandra.behrens@grossmann-uhren.com
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