ANTOINE MARTIN Slow Runner – The First and Only Wristwatch in the World to Operate At 7200 Beats per Hour

Swiss luxury watch brand ANTOINE MARTIN unveils their Slow Runner Collection, the first and only wristwatch in the world to operate at 7200 beats per hour, or just one hertz.

With the idea of “slowing down time”, Antoine Martin has created a sensational counterpoint in mechanical watchmaking. Contrary to the underlying trend towards small, rapidly oscillating balances, the forward-looking watchmaking company on Lake Lucerne in Central Switzerland has made an unequivocal commitment to large dimensions, poise and longevity. The balance of the new 36.001 calibre beats with an unbelievably leisurely frequency of 7200 beats per hour, or just one hertz. This is not even half as fast as the slowest-running designs currently available in the modern watchmaking industry.

Martin Braun, Partner and head watchmaker at Antoine Martin firmly convinced that fast beating movements and small balances should not be the aim of mechanical timekeeping. When it comes to frequency and miniaturization, quartz incontestably leads the field. This quantum leap towards a slower, more measured pace is not some trick effect achieved using an additional gear train, as in conventional one-hertz watches. On the contrary: it is the theoretical outcome of a thorough analysis involving material and frictional characteristics and mathematics. On the practical side, there was the experience gained from the existing silicium escapement (HPE), which had proved its worth and was designed in-house by Antoine Martin.

Martin Braun recognized the possibilities for mechanical applications that were opened up by new materials like silicium. The silicium escapement comes with a silicium balance spring that is much more stable than a classic steel spring. At the same time, a balance with a 24-millimetre diameter builds up so much kinetic energy that small impacts or sudden, extreme movements no longer have any influence on it. When developing the new movement, Antoine Martin did not rely solely on the new high-tech material, silicium, or the unusual dimensions. By making a number of selective design modifications, Antoine Martin’s team of engineers significantly improved the movement’s isochronism (evenness of the rate).

Further technical details:

• The balance wheel has two weighted screws to aid adjustment (in place of the usual index or arrow)

• The extreme precision involved in production of the silicium balance spring meant that both the position of the stud and the “knee” in the spring could be optimized.

• The balance rim of Grade 3 titanium oscillates on a balance bridge with an additional shock absorption system and six cabochon jewels.

The result is a perfectly stable rate combined with maximum run time and efficiency. The company’s wish to establish a connection between traditional and modern watchmaking prompted it to develop rarely used wolf (or helical) tooth gearing for the winding train. Naturally, the AM36.001 movement integrates all the features that have proved themselves in previous movements made by the company as well as the perpetual calendar and the tourbillon. These include parallel-adjustable banking pins, toothing developed in-house with chamfered gears and sinks, and tempered steel threaded bushes.

Specifications of the movement
Name: Slow Runner AM36.001
Movement Diameter 36 mm
Movement height 8.6 mm
High Performance Escapement (HPE)
Kif shock absorber
7 200 bph
Additional shock absorption via 6 cabochon jewels
Adjusted in 5 positions
Distortion-free steel balance bridge
199 individual parts with 23 jewels
Freely oscillating balance spring
Silicium escapement (pallets, escape wheel, elliptical impulse pin)
Precision adjustment with weighted screws
Silicium balance spring
Precision adjustment of backlash
Grade III titanium balance
Winding train with wolf tooth gearing
96-hour power reserve with display
All parts polished and chamfered.

The Slow Runner Collection comprises three different models.

SR01.110.1
In-house AM36.001 movement hand-wound movement with 92-hour power reserve 7200 hbph, frequency 1 Hz
Case made of stainless steel, water-resistant to 50 m sapphire glass, antireflective on both sides
Black Louisiana alligator leather strap with triple-folding clasp in stainless steel
Price: CHF 19‘500

SR01.100.1
In-house AM36.001 movement
Hand-wound movement with 92-hour power reserve
7200 hbph, frequency 1 Hz
Case made of stainless steel, water-resistant to 50 m
Sapphire glass, antireflective on both sides
Black Louisiana alligator leather strap with triple-folding clasp in stainless steel
Price: CHF 19‘500

SR01.710.1
In-house AM36.001 movement
Hand-wound movement with 92-hour power reserve
7200 hbph, frequency 1 Hz
Case made of 18K 750 rose gold, water-resistant to 50 m
Sapphire glass, antireflective on both sides
Brown Louisiana alligator leather strap with triple-folding clasp in 18-carat (750) rose gold
Price: CHF 34‘500

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