Mechanical Module
Mechanical Module close up
A contemporary Halda

Many awe-inspiring things come together to make a Halda Space Disco­very, but we maintain that the mechanical movement is its nucleus. This is our bond to the past and the vision of Henning Hammarlund. Inside the Space Discovery is one of the 128 movements deemed fit to enrich the legacy of Halda. Among movements, this is considered state of the art.

The Halda Concept

The Space Discovery marks the inception of the Halda concept with inter­changeable units for different purposes. It consists of one time platform and two time modules. Each module provides optimum performance in its respective environment. On earth for the Mechanical Module, in space for the Space Module.

Read more about the Halda concept »

The Halda Concept
If you know about watch making, you know about this man.

For the Halda Space Discovery we chose to walk a path never walked before. A path only revealed to us by the twin lights of imagination and determination. But a good guide was a precondition.

Once labelled watchmaker of the impossible, Mr Svend Andersen is one of the most revered among holologists and has a considerable body of work to his name. The very fact that watchmakers are credited for their work is also a tribute to Mr Andersen. In 1985, together with Mr Vincent Calabaresse, Mr Andersen founded the Académie Horlogère det Créaturs Indépendants. This is a society of independent watchmakers dedicated to showcasing them as creators, innovators and artists. The rest, as they say, is history.

While Sven Andersen’s unique knowledge of vintage NOS movements made him the dream associate of the Halda team, something more is at work here. The Halda Space Discovery is a fusion of analogue and digital, of gravity and weightlessness. Could it be coincidence that some of Sven Andersen’s masterpieces deal with the phases of the moon and infinity? We think there is a stronger connection between watchmaker and astronaut than first meets the eye.

Watchmaking is mechanical engineering, and mechanical engineering is an art. Sven Andersen is part of the lineage that traces a winding passage all the way back to a time and place where Halda was the pinnacle. But since the creation of the Halda Space Discovery, we are no longer in the past. Halda is moving forward and the vision of Henning Hammarlund has been reborn – shared and evolved by the Halda team. And now not even the sky is the limit.


Svend Andersen in 20 seconds


Svend Andersen is born in 1942. Graduates from The Danish Watchmaker School at 21 years old and eager to learn everything there is about watchmaking, he moves to Switzerland.


Starts to work for Gübelin in the repair department where his suggestions for improvements are swiftly dismissed. Andersen is told "you are here to work, not to invent". In frustration Andersen decides to take matters into his own hands.


Creates his first "Bottle Clock" which is met with great applause at the "Montres et Bijoux" show. The Bottle Clock is a world first and it gets Andersen the nickname of "Watchmaker of the impossible".


As of a result of the buzz created by his Bottle Clock, Andersen is hired by Patek Phillipe in their Atelier de Complications, working under legendary watchmaker Max Bernay. He stays for nine years.


An assignment to reconstruct a 19th-century triple-complication pocket-watch movement convinces Andersen that he can survive on his own, as an independent watchmaker. He sets up his shop in 1979.


A banner year: The Guinness Book of Records certifies Andersen as the maker of the world’s smallest calendar watch. The same year he creates his first world time watch “Communication” in a small subscription series. Only 24 are made.

Svend Anderssen
The Heart

The New Old Stock (NOS) movement inside the modern Halda is an automatic high performance mechanical movement. It is constructed to operate at the frequency of 5 HZ, or 36,000 bph, and has 25 jewels and a power reserve of about 43 hours. Its like has never even been used in a watch before and for the Modern Halda this was the perfect starting point.

A movement such as the H1920-SA is almost impossible to work on, and very few watchmakers have the knowledge and capability to produce clockworks of such high standard today. But Svend Andersen does – and every movement has been modernized and tuned by Mr. Andersen. It is truly a movement for the most discerning connoisseur.

Mechanical Module works
Space Module
Part of The Halda Space Program

Why does a watch like The Space Discovery consist partly of a NOS movement? Well, even astronauts spend most of their time on earth.

Go to the Space Module »

Five hertz

Most movements operate at a frequency of 4 Hz, or 28,800 beats per hour (bph). But the Halda Space Discovery is not like most. Its movement operate at 5 Hz – 36,000 bph. A higher frequency movement makes the watch more accurate and its time keeping more stable as it divides time into finer increments.

Technical data: Mechanical Module



Each of the mechanical Time Modules is uniquely marked with a individual number from 1 to 128.


Brushed Stainless Steel with a polished bezel


Diameter 45 mm, Thickness 15,8 mm


Domed Sapphire Crystal, anti-reflex treated on one side

Case back

Stainless steel see-trough case back with sapphire crystal


Engine turned and manufactured with two discs and with raised applied index, Luminous indicator

Water Resistant

5 atm (equivalent to a water pressure at a depth of 50 m)

In the modern Halda there is a vintage New Old Stock (NOS) movement. It is a (self-winding) automatic high performance mechanical movement, constructed to operate at the unusual and high frequency of 5 HZ, or 36,000 bph (beats per hour).



Mechanical Movement with Automatic winding system Hour and minute counter with a centre sweep second hand Date positioned at 3 o´clock


Geneva Stripes and rhodium-plated finish


Special manufactured rotor in Rhodium-plated silver

Power Reserve

43 hours

Mechanical Module Technical Data