Seiko Adds 40mm Prospex Alpinist to 145th-Anniversary Edo Purple Line
Updated
Updated · Gear Patrol · Aug 6
Seiko Adds 40mm Prospex Alpinist to 145th-Anniversary Edo Purple Line
3 articles · Updated · Gear Patrol · Aug 6
Summary
Seiko’s latest 145th-anniversary release spotlights a purple-dial Prospex Alpinist, the first new model in the collection since the late-2025 redesign.
The 40mm stainless steel watch keeps the Alpinist’s dual-crown layout, with the 4 o’clock crown operating its internal rotating compass bezel.
A revived 1959-era Alpinist logo returns to the dial, while the updated Caliber 6R55 automatic movement runs at 4Hz and delivers a three-day power reserve.
The Alpinist joins Seiko’s broader Edo purple anniversary series, which spans multiple watch families and uses a traditional Japanese hue tied to Tokyo’s heritage.