The Seiko Prospex SPB155J1 is part of the iconic Alpinist collection, first introduced in 1959 exclusively for the Japanese market. Originally designed for Japanese ‘Yama-otoko’ mountain men, these watches were created to deliver reliability and durability in treacherous terrain, forming a key part of Seiko’s Land collection.
Now hugely popular with fans worldwide, this modern interpretation retains the spirit of the original while offering upgraded specifications for today. The SPB155J1 features a longer 70-hour power reserve and an upgraded sapphire crystal, enhancing both performance and everyday practicality without compromising its heritage-inspired design.
As a member of the Seiko Prospex range, the SPB155J1 is built for sports lovers and adventure seekers whether on land, in the water or in the sky. Since launching Japan’s first diver’s watch in 1965, Seiko’s commitment to innovation has continued to set and redefine global standards in professional sports watchmaking.
