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For the moment we can’t take new orders until further notice. We are now processing the overwhelming amount of reservations we’ve received after the launch of our 1969 DeltaWorks and 1941 Grönograaf. Thank you for your patience and understanding.

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1969 DeltaWorks

The Pro-Active-Leisure Watch

description movement specifications
1969 DeltaWorks<br>rubber clad inserts front
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1969 DeltaWorks
rubber clad inserts

The Horological Brothers are proud of their heritage as well as the nation they call home, the Netherlands. Inspired by the Dutch ‘Delta Works’, Bart and Tim have conceived their first sports utility watch, the aptly named 1969 DeltaWorks which also references the year Bart was born.

The model is designed to cope with the perils of water ingress and shocks while still upholding the elevated standards of horology and traditional craftsmanship that are synonymous with the Grönefeld name.

When designing this watch, Bart & Tim wanted to produce a model that indulged purists with a remarkable choice of colours and styles. The 1969 DeltaWorks is available with 3 different dial designs/colours, 5 different strap options and, finally, a choice of stainless steel inserts or colour-coordinated FKM rubber-clad inserts.

Please be aware that the inserts cannot be changed after a confirmed order.

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€ 49,800.00

Alternative available models

MAKE IT YOUR OWN

Khaki DIAL

Olive STRAP

Olive INSERT

Your DeltaWorks

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Backside
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The movement - no compromises

When conceiving the 1969 DeltaWorks, Bart & Tim were keen to ensure the watch was suitable for daily wear and compatible with an active lifestyle. With this in mind, they decided it must feature a self-winding movement encompassing the same exalted finishing as other Grönefeld timepieces. Put simply, the brother’s wouldn’t countenance any compromises. As such, the resultant movement, the calibre G-06, is worthy of the term ‘Haute Horlogerie’.

Brand devotees may recognise the calibre G-06, an automatic movement first used within the company’s 1941 Principia Automatic. However, while many elements have been carried over to the 1969 DeltaWorks, there are some additional details which enhance robustness, imbuing this version with its own distinctive character.

For instance, a notable feature specific to this model is the distinctive oscillating weight. The openworked architecture features four stainless steel arms, presented in a double-spoke design. These arms are connected to an 18K gold mass adorned with a wave motif. Each of the four arms is positioned beneath the gold mass and projects beyond, sitting above a circular ledge. Should the watch be subject to a sudden shock, the elongated arms will prevent the oscillating mass touching the inside of the sapphire crystal or striking the bridges below.

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The movement - no compromises

Technical specifications

Movement

Calibre G-06
Movement Dimensions Diameter: 32.0 mm
Thickness: 5.5 mm
Number of Parts 231 parts
Power Reserve 56 hours
Number of Jewels 31 jewels, partially set in solid gold chatons
Automatic System Uni-directional winding mechanism.
For 24 hours of autonomy 633 rotations of the Oscillating mass are required
Oscillating Mass Entirely decorated by hand. 18 karat solid gold segment. Stainless steel centre pivoted on a high precision ceramic ball bearing to avoid excessive wear. To prevent damage to the movement and winding mass the extremities of the 4 arms are extended and guided by the case and case-back
Balance Wheel Variable-inertia balance wheel with four white gold timing screws (diameter 10 mm)
Frequency 21.600 vibrations/hour
Balance Spring Free sprung with triangle hairspring stud
Escapement Jewelled Swiss lever
Main Plate Spotted and ruthenium electroplated brass main plate
Bridges Stainless steel, bevels polished by hand, micro-blasted center, circular grain on the top to highlight the bridges shapes and relief engravings
Displays Central hours and minutes
Small seconds at 6 o’clock

Case and dial

Number of components 68 parts
Dimensions Diameter incl. case inserts: 44.5 mm
Diameter bezel: 43.3 mm
Thickness: 12.5 mm
Lug to lug: 53 mm
Water Resistance 10 atmospheres – 100 meters – 330 feet
Material Stainless steel AISI 316L (1.4435)
Crown Screw down crown. Triple gaskets with upright logo
Hands Flame-blued or polished steel extended Lancette hands with blue light emitting Super-LumiNova® Grade X1. Small poised seconds hand
Strap Integrated FKM rubber strap available in black, olive, blue, white or orange
Clasp Stainless steel 316L micro adjustable (7 increments over 9mm). Embossed Grönefeld and logo engraving. Opening must be done by operating both push buttons at once
Crystals Domed sapphire crystal on the front with hard anti-reflective coating on both sides
Flat sapphire crystal on the back with hard anti-reflective coating on both sides
Total Weight 135 Grams

Other models

 
Olive strap<br>with<br>rubber clad inserts Olive strap
with
rubber clad inserts
Orange strap<br>with<br>rubber clad inserts Orange strap
with
rubber clad inserts
White strap<br>with<br>rubber clad inserts White strap
with
rubber clad inserts
 
 
Blue strap<br>with<br>rubber clad inserts Blue strap
with
rubber clad inserts
Orange strap<br>with<br>stainless steel inserts Orange strap
with
stainless steel inserts
Olive strap<br>with<br>stainless steel inserts Olive strap
with
stainless steel inserts
White strap<br>with<br>rubber clad inserts White strap
with
rubber clad inserts

Contact us for more
information

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Gallery

Bart
Making the best watches in the world. We love every aspect of it. Coming up with new ideas together, bringing them to life in a design that captures the imagination, working with infinite patience to achieve perfection: it is a blessing to be able to work together every day with so much pleasure.

Handtekeningen
Tim
BartTim
Making the best watches in the world. We love every aspect of it. Coming up with new ideas together, bringing them to life in a design that captures the imagination, working with infinite patience to achieve perfection: it is a blessing to be able to work together every day with so much pleasure.
Handtekeningen