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Seiko Prospex Alpinist Watch SPB121

Sale price$725.00

From the Prospex Collection. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows every challenge with technological excellence and style. A modern re-imagining of Seiko's first sport watch, introduced in 1959, this distinctive timepiece is an upgrade of a highly successful Spring 2019 limited edition. Equipped with a rotating inner compass bezel for outdoor adventure, this unique design features a sunray-finish green dial with gold accents, LumiBrite hands and markers, magnified date window, and sapphire crystal with anti-reflective coating on the inner surface. The 24-jewel automatic movement beats at a frequency of 21,600 vibrations per hour, with a power reserve of approximately 70 hours, and can be wound manually or automatically. Crafted of stainless steel, with brown leather strap, secure tri-fold push button release clasp, screwdown crown and see-through caseback. 20 bar, 200M Water Resistant.

Technical Data

  • Model: SPB121
  • Collection: Prospex
  • Gender: Men's
  • Dial Color: Green
  • Strap Material: Leather Strap
  • Strap Detail: Brown leather strap
  • Lug Width (mm): 20
  • Movement: Automatic
  • Caliber: 6R35
  • Movement Detail:
    Caliber 6R35
    21,600 vibrations per hour
    24 jewels
    Power reserve: approximately 70 hours
  • Case Material: Stainless steel case
  • Case Diameter (mm): 39.5
  • Case Thickness (mm): 13.2
  • Case Length (mm): 46.4
  • Crystal Type: Sapphire crystal with anti-reflective coating on the inner surface
  • Water Resistance: 20 bar, 200 meters (660 feet)
  • Features


    From the Prospex Collection
    Modern re-imagining of Seiko's first sport watch, introduced in 1959
    Manual and automatic winding capabilities
    Rotating inner compass bezel
    Green dial with sunray finish and gold accents
    Magnified date window
    LumiBrite hands and markers
    Screwdown crown and see-through caseback
    Tri-fold push button release clasp

    * Products will ship in 3 to 5 business days