Key Takeaways
1. Three new Seiko Prospex Alpinist models (SPB503, SPB505, SPB507) will be released in November 2023.
2. The watches feature Seiko’s 6R55 automatic movement with a 72-hour power reserve.
3. Dimensions include a 39.5 mm diameter, 12.7 mm thickness, and 46.4 mm lug-to-lug distance.
4. Key features include sapphire crystals, anti-reflective coating, and 20 bar water resistance.
5. The Alpinist series has historical significance, originally designed for Japanese climbers in 1959.
Three new models of the Seiko Prospex Alpinist have been revealed, namely the SPB503, SPB505, and SPB507, set to hit the market this coming November. This series began back in 1959 to serve Japanese climbers. The latest Alpinist models are powered by Seiko’s innovative 6R55 automatic movement, offering an impressive 72-hour power reserve.
Dimensions and Features
The watches measure 39.5 mm in diameter, are 12.7 mm thick, and have a lug-to-lug distance of 46.4 mm, with a lug width of 20 mm. They come equipped with sapphire crystals that have magnifying features, an anti-reflective coating, and are water-resistant up to 20 bar. Each model also has a rotating compass bezel, a screw-down crown, and transparent case backs.
A Legacy of Adventure
Originally designed in 1959 for the Japanese “Yama-otoko,” or mountain men, the Alpinist has become one of Seiko’s oldest sports watch collections. Its standout traits have always included robust construction, compass bezels, and high readability. After numerous iterations, including iconic releases like the 1995 SARB series, it’s encouraging to see Seiko continue to enhance the Alpinist as a contemporary field watch.
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