The Seiko Prospex Alpinist SBDC091 SPB121J1 is a men’s automatic watch that is part of the Prospex series. It has a dark green sunray dial with Arabic Numeral markers and lumibrite on hands and indexes. The watch is powered by a Seiko 24 Jewels Automatic winding Cal. 6R35 engine and has a power reserve of up to 70 hours. The watch is water-resistant up to 200 meters / 660 feet and features a date display at the 3 o’clock position. The case is made of stainless steel and has a round shape with a crown position at 03:00. The band is a dark brown calfskin leather strap with crocodile embossing and has a buckle clasp.
The Seiko Prospex Alpinist SBDC091 SPB121J1 is a men’s automatic watch that is part of the Prospex series. It has a dark green sunray dial with Arabic Numeral markers and lumibrite on hands and indexes. The watch is powered by a Seiko 24 Jewels Automatic winding Cal. 6R35 engine and has a power reserve of up to 70 hours. The watch is water-resistant up to 200 meters / 660 feet and features a date display at the 3 o’clock position. The case is made of stainless steel and has a round shape with a crown position at 03:00. The band is a dark brown calfskin leather strap with crocodile embossing and has a buckle clasp.
in 3 offers
The lowest price for Seiko Prospex SBDC091 Alpinist Automatic Mechanical right now is $1,181.72 at Strapseeker, compared across 3 retailers.
The all-time low was $20.00 on 27 May 2026 — today's price is 5809% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 Oct 2026.
Seiko Prospex SBDC091 Alpinist Automatic Mechanical
The Seiko Prospex Alpinist SBDC091 SPB121J1 is a men’s automatic watch that is part of the Prospex series. It has a dark green sunray dial with Arabic Numeral markers and lumibrite on hands and indexes. The watch is powered by a Seiko 24 Jewels Automatic winding Cal. 6R35 engine and has a power reserve of up to 70 hours. The watch is water-resistant up to 200 meters / 660 feet and features a date display at the 3 o’clock position. The case is made of stainless steel and has a round shape with a crown position at 03:00. The band is a dark brown calfskin leather strap with crocodile embossing and has a buckle clasp.
The Seiko Prospex Alpinist SBDC091 SPB121J1 is a men’s automatic watch that is part of the Prospex series. It has a dark green sunray dial with Arabic Numeral markers and lumibrite on hands and indexes. The watch is powered by a Seiko 24 Jewels Automatic winding Cal. 6R35 engine and has a power reserve of up to 70 hours. The watch is water-resistant up to 200 meters / 660 feet and features a date display at the 3 o’clock position. The case is made of stainless steel and has a round shape with a crown position at 03:00. The band is a dark brown calfskin leather strap with crocodile embossing and has a buckle clasp.
Last updated at 01/10/2026 04:06:58
Seiko JDM SBDC091 Prospex Automatic Alpinist Watch
Free delivery
SEIKO Watch Prospex SPB121J
Free delivery between 8–12 Oct
Seiko Prospex Alpinist Sbdc091 Green Dial 6r35 Auto Japan 1853
Free delivery
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originally posted on ebay.com
Awesome watch
originally posted on ebay.com
Great watch. My father, who passed away had one. The entire family loves this watch. I was quite pleased to find a duplicate. Thanks.
originally posted on ebay.com
Fits perfectly on my wrist,,, the only problem the band latch broke, communicating with seiko now
| Release Date | 11 January 2020 |
| Drive system | Mechanical self-winding (with manual winding) |
| Case Material | Stainless Steel |
| Band Material | Calf leather |
| Accuracy | Average daily rate +25 seconds -15 seconds |
Seiko JDM SBDC091 Prospex Automatic Alpinist Watch
Free delivery
SEIKO Watch Prospex SPB121J
Free delivery between 8–12 Oct
Seiko Prospex Alpinist Sbdc091 Green Dial 6r35 Auto Japan 1853
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Awesome watch
Great watch. My father, who passed away had one. The entire family loves this watch. I was quite pleased to find a duplicate. Thanks.
Fits perfectly on my wrist,,, the only problem the band latch broke, communicating with seiko now
GREAT WATCH I LOVE IT!
| Release Date | 11 January 2020 |
| Drive system | Mechanical self-winding (with manual winding) |
| Case Material | Stainless Steel |
| Band Material | Calf leather |
| Accuracy | Average daily rate +25 seconds -15 seconds |
