Curta becomes a watch
Handcrafted in our Curta workshop in Bülach/Switzerland.
Content from Youtube can't be displayed due to your current cookie settings. To show this content, please click "Consent & Show" to confirm that necessary data will be transferred to Youtube to enable this service. Further information can be found in our Privacy Policy. Changed your mind? You can revoke your consent at any time via your cookie settings.
A Curta for Rome
On the occasion of the general audience on March 25, 2026, in Rome, we had the honor of personally presenting a special CURTA calculating machine from 1955. For us, as a watch workshop and CURTA service center, this was a very special moment. The CURTA embodies mechanical precision, inventive spirit, and the fascination of craftsmanship like almost no other object.
As the owner of the CURTA brand, we currently manage the last remaining original spare parts inventory for CURTA calculators and are dedicated to preserving this extraordinary piece of mechanical cultural heritage with the utmost care.
We were particularly delighted that Iris Dekan-Herzstark, the granddaughter of CURTA’s inventor Curt Herzstark, accompanied us on this special trip to Rome.
We’ve captured the memories of this special day in a photo book. It’s available for viewing in our watch workshop—we’d be happy to show it to you during your next visit.
Novelty 2026 – «CURTA Clock»
After three CURTA wristwatch models, a new chapter begins: the «CURTA Clock».
Inspired by the legendary CURTA pocket calculator, it combines precise design, technical sophistication, and playful details.
With magnetic date adjustment and an integrated calculator, it becomes a versatile object for the desk, workshop, or collector’s showcase.
A tribute to inventiveness, precision, and analogue technology.
From the world's smallest calculator to a mechanical watch!
The CURTA watch
As a tribute to the inventor of the CURTA calculating machine: the CURTA watch for the 75th anniversary of CURTA.
The history of the CURTA calculator
CURTA - the world's smallest mechanical calculator - How an inventor's brilliant idea became an industrial product.
The «CURTA 24h» - Revival of the Jumping 24-Hour Display
Swiss Craftsmanship in the unique CURTA Design
The 24h CURTA watch combines the heritage of mechanical precision with a modern, innovative design inspired by the iconic CURTA calculator. Its development pays homage to the history of the CURTA calculator and its inventor, Curt Herzstark.
Origin of the 24h Complication
The idea of the 24-hour display is based on an additional complication first conceived in 1924 by Paul Golay for pocket watches. This revolutionary principle was later integrated into wristwatches by the brand Gruen and successfully used for decades.
A Completely New Module
For the CURTA watch, we have redeveloped this historic complication with a jumping 24-hour day/night display (01 to 12 transitioning to 13 to 24) and implemented it in the distinctive CURTA look.
To reflect the unique CURTA design, a new 24h module was created, based on the Swiss automatic movement Ronda R150. This module integrates the characteristic number display of the CURTA calculator with its signature window arrangement. The hour numerals for the morning (AM) are printed in black, while those for the afternoon (PM) appear in red.
Why purchase a Swiss made CURTA Watch?
- Both the CURTA calculating machine and the wristwatch stand out for their unique and innovative design.
- The CURTA brand has a historic legacy worldwide, which is being revived through the CURTA watch.
- Rarity and Exclusivity: Curta watches are not as widely available as other watch brands, making them especially appealing to collectors of rare and unusual pieces.
- Each watch is a numbered, one-of-a-kind piece, handcrafted in our own watchmaking workshop.
- Purchasing a Curta wristwatch is the perfect addition for owners of Curta calculating machines, allowing them to expand their unique and historically rich collection.
