Seiko Prospex Alpinist SPB505
Seiko Prospex challenges every limit with timepieces engineered for superior performance on sea, sky, or land. Driven by a legacy of iconic design, Prospex continues to advance precision timekeeping for the modern world. Inspired by Seiko’s very first sports watch from 1959, this Prospex Alpinist embodies rugged elegance with a design built for high-intensity exploration.
This refined yet durable model features a classic black dial with the Alpinist’s signature Arabic numerals, wedge-shaped indices, and LumiBrite hands and markers. A rotating inner compass bezel equips the watch for outdoor adventure, while the prominently displayed Alpinist logo connects the design to its mountaineering roots.
Visible through the transparent screwdown caseback, the 24-jewel Caliber 6R55 automatic movement beats at 21,600 vibrations per hour, offering a power reserve of approximately 72 hours and manual winding capability. Crafted from stainless steel with a super-hard coating, this watch also includes a screwdown crown, tri-fold push-button clasp, and 200-meter water resistance for dependable durability in demanding environments.
Technical Data
- Model: SPB505
- Movement: Automatic
- Caliber: 6R55
- Vibrations: 21,600 per hour
- Jewels: 24
- Power Reserve: Approximately 72 hours
- Case Material: Stainless steel with super-hard coating
- Case Diameter: 39.5 mm
- Case Thickness: 12.7 mm
- Lug to Lug: 46.4 mm
- Crystal Type: Sapphire crystal with anti-reflective coating on the inner surface
- Dial Color: Black
- Strap: Stainless steel bracelet with super-hard coating
- Clasp: Tri-fold clasp with push button release
- Lug Width: 20 mm
- Water Resistance: 200 meters
- Additional Features: Transparent screwdown caseback with Alpinist mountain symbol
- Crown: Screwdown
Features
- Rotating inner compass bezel
- Prospex Alpinist
- Inspired by Seiko’s first sports watch, introduced in 1959 for daring mountaineers
- Classic black dial
- Magnified date calendar
- Automatic with manual winding capability
- LumiBrite hands and markers
- Alpinist logo on the dial
- Super-hard-coated case and bracelet
- Screwdown crown and screwdown exhibition caseback
- Classic black dial design
- Durable, exploration-ready construction
Seiko Prospex Alpinist SPB505
Seiko Prospex Alpinist SPB505
Seiko Prospex challenges every limit with timepieces engineered for superior performance on sea, sky, or land. Driven by a legacy of iconic design, Prospex continues to advance precision timekeeping for the modern world. Inspired by Seiko’s very first sports watch from 1959, this Prospex Alpinist embodies rugged elegance with a design built for high-intensity exploration.
This refined yet durable model features a classic black dial with the Alpinist’s signature Arabic numerals, wedge-shaped indices, and LumiBrite hands and markers. A rotating inner compass bezel equips the watch for outdoor adventure, while the prominently displayed Alpinist logo connects the design to its mountaineering roots.
Visible through the transparent screwdown caseback, the 24-jewel Caliber 6R55 automatic movement beats at 21,600 vibrations per hour, offering a power reserve of approximately 72 hours and manual winding capability. Crafted from stainless steel with a super-hard coating, this watch also includes a screwdown crown, tri-fold push-button clasp, and 200-meter water resistance for dependable durability in demanding environments.
Technical Data
- Model: SPB505
- Movement: Automatic
- Caliber: 6R55
- Vibrations: 21,600 per hour
- Jewels: 24
- Power Reserve: Approximately 72 hours
- Case Material: Stainless steel with super-hard coating
- Case Diameter: 39.5 mm
- Case Thickness: 12.7 mm
- Lug to Lug: 46.4 mm
- Crystal Type: Sapphire crystal with anti-reflective coating on the inner surface
- Dial Color: Black
- Strap: Stainless steel bracelet with super-hard coating
- Clasp: Tri-fold clasp with push button release
- Lug Width: 20 mm
- Water Resistance: 200 meters
- Additional Features: Transparent screwdown caseback with Alpinist mountain symbol
- Crown: Screwdown
Features
- Rotating inner compass bezel
- Prospex Alpinist
- Inspired by Seiko’s first sports watch, introduced in 1959 for daring mountaineers
- Classic black dial
- Magnified date calendar
- Automatic with manual winding capability
- LumiBrite hands and markers
- Alpinist logo on the dial
- Super-hard-coated case and bracelet
- Screwdown crown and screwdown exhibition caseback
- Classic black dial design
- Durable, exploration-ready construction
Availability: Out of STOCK
Authorized Retailer
Specifications
Specifications
Return Policy
Return Policy
Exchange only within 10 days of purchase

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What Our Clients Say About Us
Mike and his team did a wonderful job making our dream come true!! Very fast and excellent quality!
Such a wonderful experience. It was my husband and my 16 year wedding anniversary on the day we walked into the store. We weren’t expecting to find a beautiful band with my taste and in our budget. However, the owner and his son Sterling were very helpful and patient. Sterling has excellent taste and such a calm demeanor. We really felt comfortable and the owner gave us a great deal for our anniversary I will never forget this experience. They even fixed my engagement ring by replacing a stone that had originally fallen out and they also tightened all the prongs because the main diamond was wobbling in danger of coming loose. They did this all same day within a couple hours while I looked for my anniversary band! This meant so much to me because I hadn’t been able to wear my engagement ring for many years and I thought it would be super expensive to fix. The last time I went to a fast fix place and paid close to $1,500. They did a terrible job and replacing one of the small diamonds that had fallen out with a dark dirty dark diamond that didn’t match the rest of the diamonds on the band of my engagement ring…After that I was so disappointed and discouraged to take my ring again somewhere to fix it. But Dejuan’s totally took care of me and I paid under $200 to replace the small dirty diamond and fix the damage the fax fix place caused. To walk out on my 16 year wedding anniversary finally able to wear my engagement ring after so many years of keeping it in the drawer… ugh I can’t tell you how sooo thankful I am for good honest people and professionals! Highly recommend and we will forever now be lifelong customers! Enjoyed the conversation and real genuine connection from both! Rebecca and David Samudio
Communication with Dejuan Jewelers was prompt and accurate. They gave me the date that they were going to recieve the watch which was promptly shipped the same day. Texted me with the tracking number and answered my question/ queries promptly. Very pleasant and professional. Highly recommend them to anyone looking to buy a watch. It was a pleasure to do business with them and I hope to be a repeat customer. Thank you!
Nice people, good service. They fixed my silver necklace for a fair price and did great work