Seiko Prospex Alpinist GMT automatic black dial leather strap 39,5 mm

The Pitch

In 2020, Seiko's Bestseller Alpinist joins the Prospex collection. Not wanting to change a winning team, only the X logo now affixed to the Alpinist dial marks this evolution. In 2023, Seiko revolutionizes its model by adding a GMT complication! Its "Alpinist" design is still inspired by the model first launched in 1959 for Japanese mountaineers "Yama-otoko", easily recognizable thanks to its iconic double-crown look. It's a sporty model, designed for both outdoor and everyday use. Indeed, this watch aims to be an example of durability and reliability, and offers 200-meter water resistance, making it perfect for all activities.

But one major change is noticeable: a 24-hour GMT bezel, giving it a little "Explorer" look... With its 39.5 mm diameter and 13.55 mm thickness, its proportions are pleasing. The black dial has a grainy texture, with applied hour-markers and Lumibrite-filled cathedral hands for optimum legibility, so that they stand out against the black dial. A red marker on the inner compass ring indicates the cardinal direction of north. The whole is protected by an anti-reflective domed sapphire crystal.

Finally, this watch is adorned with a black calfskin leather strap equipped with a folding clasp, giving it a little dressy edge to this watch with very sporty specifications.

Technical side: a new GMT caliber

This Prospex Alpinist GMT embeds the brand-new self-winding Manufacture caliber 6R54. It is based on one of the Japanese firm's must-have movements, which is notably used in most of the brand's watches: the 6R35. It beats at a frequency of 21,600 vibrations per hour and offers a comfortable 72-hour power reserve, enabling you to alternate with your other watches without having to wind it systematically. But this new caliber also brings a new function: GMT!

Its GMT hand can be set independently in one-hour increments without interrupting the local time hands, and allows the wearer to read the time in a second time zone at a glance.

In brief

• The design of the iconic Alpinist
• A manufacture automatic caliber with GMT complication!
• Water resistance 200 meters