Ships within one to two (1-2) weeks after purchase.
The Seastrong Heritage Automatic captures the golden age of dive watches, pairing Alpina’s mid-century tool watch DNA with modern engineering. Sized for presence but refined in execution, it delivers vintage diver charm with practical specs, dual crowns, and bold dial options.
Housed in a 42mm stainless steel case, each version features an internal rotating bezel controlled by the 2 o’clock crown, protected under a boxed sapphire crystal. The AL-520GR4H6 features a deep sunburst brown dial paired with a green rubber strap for a sport-forward execution. The AL-520BY4H6, by contrast, brings warmth and elegance with its black gilt dial and classic brown leather strap.
Inside both is Alpina’s AL-520 (Base Sellita SW200) automatic movement with a 38-hour power reserve, visible through a sapphire caseback. With 300 meters of water resistance, screw-down crowns, and sharp heritage styling, the Seastrong Heritage Automatic is a true diver with one foot in the past and one planted firmly in the now.
- Case: Stainless Steel
- Dial: Dark Brown Sunray
- Movement: AL-520 Automatic
- Complications: Internal Rotating Bezel
- Winding: Automatic
- Lens: Boxed Sapphire
- Strap: Green Rubber Strap
- Water Res.: 300m
- Diameter: 42mm
- Length: 48mm
- Thickness: 12.3mm
- Lug Width: 21mm
- Swiss-Made
- Ref Number: AL-520GR4H6
- Warranty: Two Years
- Case: Stainless Steel
- Dial: Black with Gilt Accents
- Movement: AL-520 Automatic
- Complications: Internal Rotating Bezel
- Winding: Automatic
- Lens: Boxed Sapphire
- Strap: Brown Leather Strap
- Water Res.: 300m
- Diameter: 42mm
- Length: 48mm
- Thickness: 12.3mm
- Lug Width: 21mm
- Swiss-Made
- Ref Number: AL-520BY4H6
- Warranty: Two Years
Founded in 1883 by Gottlieb Hauser, Alpina is a Swiss watchmaking house based in Geneva that has emerged as a pioneer in the world of sport, characterized by a spirit of adventure and innovation. In 1938, the brand invented the concept of the sports watch with its Alpina 4: impact-resistant, non-magnetic, water-resistant, and made of stainless steel. Since its origins, Alpina’s mission has been to design luxury sports watches delivering exceptional accuracy and reliability in extreme environments. Today, this commitment is upheld with four collections: Alpiner (Earth), Seastrong (Sea), Startimer (Air) and Heritage (paying tribute to the brand’s legacy). Alpina has built up robust partnerships reflecting its enduring commitment to the mountain environment – a constant source of inspiration – as well as a team of athletes and other friends of the brand. They are united by a common ambition: scaling new heights in the most challenging conditions.
