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This 2021 design is inspired by Japan’s first diving watch, created by Seiko back in 1965.
This 2021 version comes with calibre 6R35 and its long-lasting 70 hour power reserve, accompanied by Seiko’s first ever original fabric strap for diver’s watches – the ‘SEICHU,” crafted in Japan, designed for flexibility and durability.
Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.
Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.
- Released in June 2021
- Automatic with Manual Winding Mechanical Movement
- Caliber 6R35
- Black Dial with Applied Markers and Hands
- Faceted Stainless Steel Hour, Minute and Second Hands with Polished and Brushed Surface
- Silver Stainless Steel Case
- Dark Brown with Additional Camel Polyester Strap
- Curved Sapphire Crystal with Anti-reflective Coating on Inner Surface
- Date Display at 3 o’clock Position
- Screw-down Crown at 3 o’clock Position
- LumiBrite on Hands, Indexes and Bezel Markers
- Unidirectional Rotating Stainless Steel Bezel
- Buckle Clasp
- 24 Jewels
- 70 Hours Power Reserve
- +25 to -15 seconds per day Accuracy
- 21,600 Vibrations per hour
- Magnetic Resistance 4,800 A/m
- 200 m Water Resistance for Air Diving
- 47.6 x 40.5 x 13.2 mm
- 106 g
Driving system | Automatic with manual winding |
---|---|
Caliber Number | 6R35 |
Case material | Stainless steel with super hard coating |
Case back | Solid |
Band type | Strap |
Band material | Polyester |
Band color | Dark brown and additional camel strap |
Band width | 20 mm |
Clasp | Buckle |
Dial color | Black |
Glass material | Curved sapphire crystal with anti-reflective coating on inner surface |
Hands | Cream silver tone (hour, minute, second) |
Dial markers | Cream silver tone baton indexes with double batons at 12 o’clock |
Second markers | Minutes markers around the outer rim |
Lumi Brite | Hands, indexes and bezel |
Bezel | Unidirectional rotating black colored stainless steel with arabic numerals minutes markers per 10 minutes scale |
Crown | Screw down at 3 o’clock position |
Calendar | Date display at 3 o’clock position |
Function | Date, hour, minute, second hand |
Accuracy | +25 to -15 seconds per day |
Vibration | 21,600 vibrations per hour (6 beats per second) |
Drive duration | Approximately 70 hours |
Magnetic resistance | 4,800 A/m |
Water resistance | 200 m / 660 feet water resistance suitable for air diving |
Size | Length : 47.6 mm x Diameter : 40.5 mm x Thickness : 13.2 mm |
Weight | 106 g |































Seiko Prospex 1965 Diver’s Re-Interpretation Automatic Black Dial Brown NATO Strap Watch For Men - SPB239J1
Excellent!
Based on 4.8/5 of 992+ reviews
19-03-2025
Really Great Watch
I picked up a Seiko for daily use and I’m seriously impressed. Keeps perfect time, looks clean, and feels durable. You can tell it’s built to last.
- Carmen W
09-03-2025
Feels Super Legit
Was nervous buying a Versace online but this one’s 100% real. It has a nice weight, and the face is stunning. I get compliments every time I wear it.
– Kaia S
15-01-2025
Stylish Look
My Tag Heuer arrived in two days—didn’t expect that! The watch is absolutely stunning. Best quality and came well-packaged.
– Delia H
23-05-2025
Fully Authentic
The Seiko came with all original docs and tags. I had it checked and it’s 100% real. Very happy with the quality and service. Definitely, I'll order again.
– Sophie W
11-04-2025
Truly Impressed
I have a few branded watches, but this one instantly became my favorite. The detail on the dial is insane. Delivery was smooth and fast.
– Matteo R
21-03-2025
Amazing Deal
Scored a gorgeous Gucci piece for way less than retail. Brand new, boxed, and certified. Will recommend this store to my friends for sure.
– Zane F
08-02-2025
Rare Find
I’ve been looking for this Seiko model for months and finally found it here. So glad I took the chance totally legit and beautiful. Came in a really cute box too.