1969 DELTAWORKS KHAKI DIAL
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.
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 center 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 (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
REF.: 75120
The Manfredi Difference
Two generations, over 35 years in luxury jewelry and watches.
Every piece new and authentic, with manufacturer warranty.
In-house craftsmanship and a 2-year warranty on certified pre-owned.
Gift-wrapping available online and in-store.