The Excalibur Bi-Retrograde Calendar by Roger Dubuis

This year, Roger Dubuis celebrates its 30th anniversary, and for the occasion, the company pays tribute to its co-founder’s favourite complication: the bi-retrograde display.

This function, previously featured in the Excalibur Grande Complication alongside a dozen other highly complex mechanisms, takes centre stage once again. The Maison has also introduced a less complicated, more classic edition to further honour the bi-retrograde display.

Also referred to as “the ecliptic counters” by the Maison a nod to their elliptical shape and distinctive role in indicating the months and date the design showcases a symmetrical dial layout. Enhanced by refined detailing, it pays homage to the Maison’s early creations from 1996.

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Introducing Albishorn Unveils The New Thundergraph

A limited edition inspired by the 1952 Swiss expeditions to Everest

ByWaqt

16.03.2025

3 minutes read

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Albishorn may be a newcomer to Swiss watchmaking, but it enters the scene with serious pedigree, making its debut at Geneva Watch Days 2024. The brand was established by Sébastien Chaulmontet, a lawyer-turned-watchmaker renowned for his expertise in chronographs. Following the launch of its second timepiece, the Type 10 Chronograph, Albishorn now introduces its third release: the Thundergraph. Inspired by the pioneering spirit of the 1952 Swiss expeditions to Everest, this mountaineering chronograph blends vintage aesthetics with modern engineering, delivering a rugged yet refined tool built for extreme conditions.

The Thundergraph is Albishorn’s tribute to the Swiss climbers who laid the groundwork for the first successful ascent of Mount Everest in 1953. The watch is envisioned as the ultimate tool that could have accompanied these expeditions, designed for legibility and durability.

Housed in a 39mm x 12mm stainless steel case with polished and brushed surfaces, the Thundergraph features an oversized bidirectional bezel with black and red lacquer accents. A large bronze crown at 10:30 and a red monopusher at 9:30 ensure effortless operation, even with gloved hands, an essential feature for high-altitude climbers. The case also offers 100 meters of water resistance.

The sunburst petroleum blue dial showcases the brand’s unique "California ghost" layout, blending gilt Roman numerals with Super-LumiNova for optimal legibility. This combination of vintage-style elements with modern lume application ensures readability in low-light or stormy conditions. The dial also features a small seconds subdial at the lower right and a 30-minute chronograph counter at the lower left.

Powering the Thundergraph is the manually wound ALB03 M chronograph movement. This COSC-certified caliber operates at 28,800 vph (4Hz) and delivers an impressive 65-hour power reserve. It comes with a Beige or Petroleum leather strap, and is limited to just 99 pieces, with production spread over three years. It is priced at CHF 3,650, approximately AED 15,200.

For more information, visit Albishorn’s official website.

Technical specifications: Albishorn Thundergraph

Case: stainless steel, polished and brushed, bidirectional bezel with black and red lacquer, Large bronze crown at 10:30, red monopusher at 9:30
Diameter: 39mm
Thickness: 12mm
Water resistance: 100 meters
Dial: Sunburst petroleum blue, gilt Roman numerals and Super-LumiNova, small seconds subdial at lower right, 30-minute chronograph counter at lower left
Movement: ALB03 M caliber, Manually wound, COSC-certified
Functions: Chronograph, hours, minutes, small seconds
Frequency: 28,800 vph (4Hz)
Power reserve: 65 hours
Bracelet/Strap: Beige or Petroleum leather strap
Availability: Limited to 99 pieces, with production over three years
Price: CHF 3,650, approximately AED 15,200