
Clarity. Precision. Value.
German Bauhaus design. Swiss precision. Exceptional value.

Clearly structured date display

Reliable Swiss precision

Highly durable for everyday use

Premium details at no extra charge

Winner of multiple international awards

A balance of form and function
Winner of the 2009 Red Dot Design Award
The O101 was recognized with the Red Dot Design Award in 2009 for its distinctive approach to watch design.
At the heart of the design is a simple idea:
Why hide the date inside a small window?
Instead, the O101 turns the entire month into part of the dial.
31 apertures form a precise circular structure, while a moving indicator marks the current date.
The calendar is no longer an addition to the watch.
It becomes part of the architecture of the dial.
Not Just a Date. A Clear Structure.
A conventional date window shows one isolated number.
The O101 shows the entire month at once.
31 precisely positioned apertures form a complete calendar around the dial.The date indicator advances day by day, making the passage of time visible within a clear, ordered structure.
You don't just read today's date.
You see where today belongs in the month.
This distinctive Jump Date concept has been part of a.b.art's design language since 1992.
Why 31 Holes?
31 days. 31 positions. One complete month.
Each aperture represents one day of the month.
Together they transform the calendar into a visual structure — balanced around the dial rather than confined to a small date window.
It is functional information reduced to its simplest geometric form.
Swiss Made
Swiss craftsmanship, inside and out.
The O101 is a Swiss Made timepiece, powered by the ETA F07.111 Swiss quartz movement — engineered for reliable accuracy and dependable everyday performance.
Paired with a stainless steel case and sapphire crystal, it brings Swiss watchmaking precision to one of a.b.art's most distinctive designs.
SWISS MADE
Made in Switzerland
ETA F07.111
Swiss Quartz Movement
SAPPHIRE CRYSTAL
Scratch-resistant clarity
Sapphire Crystal — Made for Everyday Wear
The O101 is protected by scratch-resistant sapphire crystal — one of the hardest transparent materials used in watchmaking.
It helps preserve the clean, highly detailed dial through years of everyday wear.
• Highly scratch-resistant
• Exceptional optical clarity
• Designed for long-term wear
Balanced Proportions.
40.5 mm × 7.3 mm
The 40.5 mm case gives the O101 an open, architectural presence on the wrist, while the restrained case height keeps the overall profile clean and balanced.
Designed to make the distinctive Jump Date dial easy to read without feeling oversized.
40.5 mm Case Diameter
7.3 mm Case Height
21 mm Strap Width
Designed to Be Different.
Easy to Wear Every Day.
The unusual calendar gives the O101 its identity.
Everything else remains deliberately restrained — silver, white and black, balanced into a watch that works naturally from business to everyday wear.
Red Dot Design Award 2009
An Award-Winning Design
In 2009, the O101 was recognized with the Red Dot Design Award for its distinctive approach to watch design.
Its signature 31-aperture date display transforms a functional calendar into a defining part of the dial — a design that remains unmistakably a.b.art.
Recognized by Leading Design Institutions
a.b.art has earned recognition from leading design institutions in Europe and the United States for its distinctive approach to functional watch design.
Museum Shop Selection
Selected a.b.art watch designs have also been carried by leading museum shops in the United States.
MoMA New York · SFMOMA · Museum of Contemporary Art Chicago
German Bauhaus Design Since 1991
a.b.art was founded in Freiburg, Germany, in 1991, inspired by the clarity and functional philosophy of Bauhaus design.
In 2003, the brand moved to Biel/Bienne, Switzerland, marking an important chapter in its development.
Today, a.b.art continues to create watches defined by clarity, balance, and timeless Bauhaus aesthetics.
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