A high-performance mechanical watch, instilled with Japanese spirit and craftsmanship.
Japanese watchmaking techniques are gradually becoming a lost art. Manufacturing locations are being shifted
to cheaper locations overseas, and there are now hardly any cases where the inscription “Made in Japan” can be
seen on affordably priced mechanical watches sold in the country. Domestically produced mechanical timepieces
are now limited to only a select few highly priced models.
Japan is renowned for its mechanical watches, yet very few people who would love to wear them are currently
buying them. Is this an acceptable state of affairs for the Japanese watch industry? As the market decreases,
the traditional watchmaking techniques also become increasingly difficult to pass on to the next generation.
Knot’s flagship model, the AT-38, was born out of that sense of crisis for the industry, and out of our
desire to communicate the charm and appeal of mechanical watches to an audience that had abandoned them.
Made in Japan, the watch features high-beat movement with high precision. Its case is the product of advanced
metalworking techniques used in the country’s finest mechanical watches. The watch face is also manufactured
in Japan, in an age where almost all domestic dial production has ceased. Knot has combined all of the
Japanese watchmaking techniques that were gradually fading away, creating a high-precision mechanical watch
and offering it at an accessible price. The AT-38 is the culmination of the passion of Japanese watchmakers:
an authentic, affordably priced, Japanese-made mechanical watch.
The crystal of the AT-38 utilizes the same level of sapphire glass with anti-reflective coating that can be
found in luxury watches. The coating is on one side only, which increases the visibility of the clock
face while at the same time minimizing discoloration of the glass.
The sign of a high-performance timepiece: high-beat movement
For the movement – the watch’s beating heart – Knot has adopted the Cal.9015 high-beat movement from
CITIZEN MIYOTA, made in Japan.
This high-beat movement oscillates 28,800 times per hour (8 times a second), reducing the distance of the
swing of the second hand and drastically increasing the precision of the watch.
The Cal.9015 is a thin, high performance 8-beat movement, and the first mechanical movement to be revived
by MIYOTA in 30 years. It has a thickness of just 3.9mm.
The AT-38 makes maximum use of the features afforded by the Cal.0915 movement, fitting the components into
a case 38mm in width, the standard for a dress watch, while at the same time achieving a total thickness of
10mm. In addition, the transparent back cover of the watch case allows the wearer to see the internal
workings with their own eyes.
“Sallaz Polishing” is synonymous with luxury Japanese-made mechanical watches A clear mirror-finished
case, polished to perfection by the hands of skilled craftsmen
The case of AT-38 is produced by Hayashi Seiki Seizo Co. Ltd., a company that manufactures watch cases for
Japan’s finest mechanical watches. The base material is 316L surgical stainless steel, an ultra-pure
stainless steel used for applications in the medical field worldwide. Our watch cases are manufactured from
start to finish at Hayashi Seiki Seizo’s production plant in Sukagawa (Fukushima prefecture), starting from
the blanking of a stainless steel plate. The stainless steel blanks are heated to approximately 1,200°C
using a blast furnace, and then molded by repeated hammering into eight different shapes in a process known
as forging. This increases the density of the metal to create a strong, hard case.
The mirror-polishing technique that gives the hard, rough-edged cases their beautiful even finish is
Hayashi Seiki Seizo’s world-class “Sallaz” polishing technique. This Sallaz polishing is rarely used even in
luxury Japanese watches, and there are few expert craftsmen in Japan with the high level of skill that the
polishing technique demands. The ability to achieve different looks from the same material by carefully
polishing each part is an advanced technique which can be performed by Hayashi Seiki Seizo thanks to its
Case manufacturing partner: Hayashi Seiki Seizo Co. Ltd. Continually creating beautiful metalwork at its
world-class precision metal processing plant
Hayashi Seiki Seizo is a Fukushima-based manufacturer that prides itself on its world-class precision metal
processing technology. The company has produced watch cases ever since its foundation, and still
manufactures cases for the finest Japanese luxury watches to this day. Hayashi Seiki Seizo is also highly
regarded for passing on the Sallaz polishing skills and techniques used in the production of its luxury
watch cases, and was awarded the grand prize at Fukushima prefecture’s 4th Utsukushima Monozukuri
manufacturing awards in 2011.
The culmination of great skill and technique, with a commitment to continued manufacturing in Japan. A
mechanical watch with “Made in Japan” etched onto its dial.
Meticulous care has been taken to ensure that every aspect of the AT-38 is manufactured to the highest
possible standards, down to each individual component. This not only means the assembly, but also the
manufacture of parts such as its watch face, which revives the Japanese art of applying hour markers (the
elements on the dial), which was almost lost.
Dial manufacturing partner: Selectra Co. Ltd.
Precision assembled to preserve and maintain quality The revival of traditional hour marker setting
techniques by a long-established watch assembly factory
Selectra, located in Akita prefecture, is one of only a handful of remaining watch assembly factories with
a long-established history. It is one of the few watch assembly firms in Japan to be equipped with a clean
room, and has long been a specialist in manufacturing luxury watches for major well-known watch brands, as
well as repairs. The company’s proven technology is held in high regard at every facet of the industry.
The case of AT38 is produced by Hayashi Seiki Seizo Co., Ltd., who manufacture watchcases for Japan’s finest
●Model number: AT-38 ●Number of jewels: 24 ●Normal usage accuracy: average -10
seconds to +30 seconds per day (at room temperature: 5°C to 35°C) ●Features: 3 hands (hours,
minutes, seconds), date ●Vibrations: 28,800 beats per hour (8 beats per second) ●Driving system: automatic with manual winding mechanism ●Power reserve: 42 hours
●Warranty period: 3 years for movement
THE JAPAN COLLECTION
Special automatic model in collaboration with Japanese craftsmanship