Founded in 1881 in Tokyo, Japan, Seiko is known for its in-house manufacturing and long-standing expertise in reliable mechanical watches. The Alpinist collection reflects the brand’s heritage of field watches originally designed for Japanese mountaineers.

The Seiko Alpinist, reference SPB121J1, is a versatile sport watch combining outdoor functionality with classic design. The watch features a 39.5 mm stainless steel case paired with a green sunburst dial. Applied luminous indexes, cathedral-style hands, and the internal rotating compass bezel give the watch its distinctive character.

Powered by the Seiko caliber 6R35 automatic movement, it offers a power reserve of approximately 70 hours, a frequency of 21,600 vph, and functions including hours, minutes, seconds, and date. A sapphire crystal with anti-reflective coating protects the dial, while the internal rotating compass bezel enhances its field-watch functionality. Water resistance is rated at 200 meters. The watch is fitted on a brown leather strap with a pin buckle.

This Alpinist is in near mint condition and comes as a full set with the original unworn leather strap and a Strapcode Bi-Colour steel bracelet.