No numbers and figuresThe perpetual calendar of Dr. Ludwig Oechslin

The sum of 40 years of watchmaking experience, Dr. Ludwig Oechslin’s perpetual calendar watch is designed for everyday use. It correctly displays the date for every month including February. Analog dots represent the year, month and date to address a key usability challenge with calendar watches: making the date legible, without resorting to an oversized display which distracts from reading the time.

Reliable.

Oechslin’s perpetual calendar function comprises just 9 additional parts. Fewer parts mean fewer interactions between parts and higher reliability. A lifetime warranty covers all parts designed by Oechslin.

Simple to set.

In general, perpetual calendars are a laborious affair to set. Most require a complex system of pushers, and the date cannot be adjusted backwards. Oechslin’s perpetual calendar can be set simply using the crown, and the date is adjustable both forwards and backwards.

Individually manufactured in Switzerland.

ochs und junior expects to manufacture about 20 perpetual calendar watches this year. The case is manufactured by Peter Cantieni in Hinwil, Switzerland, while the gear system, dial, hands, buckle and crown are manufactured by Helfenstein in Alpnach, Switzerland. Each perpetual calendar is hand-assembled and hand-regulated by Sandra Flück at the ochs und junior workshop in Lucerne.

Purchase information.

The reference execution designed by Ludwig Oechslin comes in a 42mm grade 5 titanium case with a patina dial, platinum PT950 hands, rhodium markers, and orange dots. The export price (excluding 8% Swiss VAT) is CHF 20’240. You can also customize your personal perpetual calendar. Online or in person, cofounder Beat Weinmann will guide you. All sales and after-sales service are directly handled by Weinmann.