PROSPEX ALPINIST SPB121

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

  • Caliber 6R35
  • 21,600 vibrations per hour
  • 24 jewels
  • Power reserve: approximately 70 hours
  • Case Diameter: 39.5mm
  • Case Thickness: 13.2mm
  • Case Length: 46.4mm
  • Features

  • Automatic with manual winding capability
  • Green dial with sunray finish and gold accents
  • Rotating inner compass bezel
  • Magnified date window
  • Screwdown crown
  • See-through caseback
  • LumiBrite hands and markers
  • Tri-fold clasp with push button release
  • PROSPEX ALPINIST SPB121
    PROSPEX ALPINIST SPB121
    PROSPEX ALPINIST SPB121
    PROSPEX ALPINIST SPB121
    PROSPEX ALPINIST SPB121

    PROSPEX ALPINIST SPB121

    PROSPEX ALPINIST SPB121

    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

  • Caliber 6R35
  • 21,600 vibrations per hour
  • 24 jewels
  • Power reserve: approximately 70 hours
  • Case Diameter: 39.5mm
  • Case Thickness: 13.2mm
  • Case Length: 46.4mm
  • Features

  • Automatic with manual winding capability
  • Green dial with sunray finish and gold accents
  • Rotating inner compass bezel
  • Magnified date window
  • Screwdown crown
  • See-through caseback
  • LumiBrite hands and markers
  • Tri-fold clasp with push button release
  • Availability: IN STOCK

    Regular price $725.00 USD
    Regular price Sale price $725.00 USD
    Sale Sold out

    Authorized Retailer

    Specifications

    Caliber 6R35 Designer Seiko Dial color Green Strap Brown leather strap Technology Automatic Water resistance 20 bar 200 meters (660 feet)

    Return Policy

    Exchange only within 10 days of purchase

    View full details

    What Our Clients Say About Us

    Sarah Tamilarasan
    in the last week

    I can’t say enough wonderful things about my experience, especially thanks to Sterling at Dejaun Jewelers. I had been searching everywhere for the limited-stock Seiko “Pepsi” SSK047 — it was sold out almost instantly and nearly impossible to find. This watch was a gift for a close friend who never asks for much, and this was the one thing he truly wanted. I was determined to find it for him. When I reached out, Sterling immediately reassured me that they had a few in stock. His communication was warm, clear, and incredibly patient as he confirmed everything I needed to know. He understood how meaningful this gift was, and within just a few hours of placing the order, he surprised me by sending the UPS tracking number. That level of responsiveness and care is rare these days. Sterling turned what could’ve been a stressful search into a smooth, heartwarming experience. Thanks to him, I was able to secure a special, hard-to-find watch for someone who truly deserves it. I’m deeply grateful and highly recommend this team. If you’re looking for honesty, commitment, and exceptional service, Dejaun Jewelers is the place.

    Benito Pedraza
    in the last week

    Attentive staff and very easy transaction!

    Николай Савченко

    Xiuwei Li
    in the last week

    I had an amazing experience purchasing our rings here, and I want to give a special shout-out to Sterling. From the very beginning, he made the entire process smooth, stress-free, and enjoyable. He was incredibly patient, knowledgeable, and responsive to every question I had — even sending updates along the way so I always knew what was happening with the order. When the ring arrived, he shipped it immediately and followed up with tracking information right away. It’s rare to find someone who genuinely cares about customer satisfaction the way Sterling does. His professionalism and kindness made us feel taken care of throughout the whole process. If you’re looking for great quality jewelry and outstanding service, especially with someone who will go above and beyond for you, ask for Sterling. Highly recommend