Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

In support of World Oceans Day this year, Swiss watch brand Alpina has launched the limited edition Seastrong Diver 300 Automatic Calanda. It is the brand’s first timepiece to feature a 100% recycled stainless steel case. This new Seastrong Diver 300 Automatic pays tribute to the highly symbolic Calanda, the first ship to fly the Swiss flag. Fitted to a recycled plastic wristband, Alpina’s new diver is available in just 300 units.

Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

Steel is one of the world’s most heavily recycled materials, and is a central component of any sustainably-minded company. Manufactured by Thyssen Krupp, the PuReSteel recycled stainless steel has the highest level of quality currently available on the market, and is primarily sourced from the maritime shipping industry.

Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

The PuReSteel used in the Seastrong Diver 300 Automatic Calanda is sourced from dismantled maritime carriers. A tribute to Switzerland, the Seastrong Diver 300 Automatic Calanda takes on the imagery of the first ship to have ever flown the Swiss flag, dismantled in 1953.

Calanda was a cargo ship built in 1913, which flew under Switzerland’s flag from April 9th, 1941. It was the very first ship to be recorded on the Swiss Boat Register, assigned Basel as its home and registration port.

Calanda Ship Switzerland
@ Swiss National Library and Annemarie Clarac Schwarzenbach

Evocative of the rounded curves of a porthole, the Seastrong Diver 300 Automatic Calanda’s recycled stainless steel 42 mm case is polished with a satin finish to the same high standards as a traditional stainless steel case.

The unidirectional rotating notched bezel is made from traditional stainless steel with a brushed finish and a 60-minute scale, often used to time immersion and increments. The central hour and minute hands embedded with vintage beige luminescent matter count down the time, complete with a seconds hand with a red triangle tip – the Alpina logo.

Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

A matte black dial encircles the whole, studded with applied indexes with the same vintage beige luminescent detailing, and a date window at three o’clock. The Seastrong Diver 300 Automatic Calanda is water-resistant up to 300 metres thanks to its full screw-in case back and crown.

The steel case back is embellished with the Seastrong collection’s hallmark motif: Alpina’s beloved mountain peaks, layered under a trident in a nod to the watch’s deep-sea personality. With its AL-525 automatic movement, the Seastrong Diver 300 Automatic Calanda boasts 38 hours of power reserve.

Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

In line with the company’s eco-friendly policy, the new Alpina Seastrong Diver 300 Automatic Calanda watch sits atop a recycled plastic (PET) wristband in harmonious grey and black.

Each watch comes in a case entirely made from recycled plastic, alongside a single-page warranty and a certificate of authenticity printed on FSC Recycled-certified paper, thereby cutting back on the amount of paper and ink used.

Alpina Seastrong Diver 300 Automatic Calanda Limited Edition

The user guide, meanwhile, has gone paperless, and is available in digital format via a QR code printed on the box’s inner packaging, here too made from recycled plastic bottles (rPET).

Technical details

Model: Alpina Seastrong Diver 300 Automatic Calanda
Reference AL-525BBG4VR6

Functions
Hours, minutes, seconds, date

Movement
AL-525 caliber, automatic
38-hour power-reserve, 26jewels, 28’800 alt/h

Case
Brushed and polished recycled stainless steel 2-part case
Unidirectional 60 minutes brushed stainless steel bezel
Diameter of 42 mm
Height of 12.66 mm
Scratch-resistant convex sapphire crystal
Water-resistant up to 30ATM/300m/1000ft
Screw-down crown and case back
Engraved case back

Dial
Matt black dial with grained finishing and white markers on outer ring
Applied silver color indexes filled with old radium luminous treatment
Silver color hour and minute hands filled with old radium luminous treatment
White second hand with red triangle

Strap
Black and grey Recycled PET strap

Edition
Limited to 300 pieces

Recommended retail price
1,695€