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The Alpinist is a very cool part of Seiko's history. The Alpinist is Seiko's first sports watch. While we are more use to seeing the Alpinist with the compass inside the the case, this is a more true design to the original Alpinist. The watch features a 6R35 caliber, which is a great caliber that has a 70 hour power reserve. The SPB155 is part of Seiko's Luxe Prospex line, the Alpinist is Seiko's version of a field watch.
Automatic with manual winding capacity
+25 to -15 seconds per day
Curved sapphire crystal
Anti-reflective coating on inner surface
Lumibrite on hands and indexs
Three-fold clasp with push button release