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Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J
Seiko Prospex 'Tuna' Divers Watch - S23631J

Seiko Prospex 'Tuna' Divers Watch - S23631J

A bold and modern Prospex timepiece from Seiko. This model boasts a black stainless steel case, measuring at 49mm and hosted by a co-ordinating black silicone strap. The black dial features a clear layout, with Lumibrite upon the hands, indexes and even framing bezel, and is protected by sapphire crystal. A practical day and date display is also showcased at the 3-o-clock mark. This professional diver's watch is powered by reliable quartz movement, and is water resistant up to 1000 metres. Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

A bold and modern Prospex timepiece from Seiko. This model boasts a black stainless steel case, measuring at 49mm and hosted by a co-ordinating black silicone strap. The black dial features a clear layout, with Lumibrite upon the hands, indexes and even framing bezel, and is protected by sapphire crystal. A practical day and date display is also showcased at the 3-o-clock mark. This professional diver's watch is powered by reliable quartz movement, and is water resistant up to 1000 metres. Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

Seiko Prospex 'Tuna' Divers Watch - S23631J

A bold and modern Prospex timepiece from Seiko. This model boasts a black stainless steel case, measuring at 49mm and hosted by a co-ordinating black silicone strap. The black dial features a clear layout, with Lumibrite upon the hands, indexes and even framing bezel, and is protected by sapphire crystal. A practical day and date display is also showcased at the 3-o-clock mark. This professional diver's watch is powered by reliable quartz movement, and is water resistant up to 1000 metres. Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

A bold and modern Prospex timepiece from Seiko. This model boasts a black stainless steel case, measuring at 49mm and hosted by a co-ordinating black silicone strap. The black dial features a clear layout, with Lumibrite upon the hands, indexes and even framing bezel, and is protected by sapphire crystal. A practical day and date display is also showcased at the 3-o-clock mark. This professional diver's watch is powered by reliable quartz movement, and is water resistant up to 1000 metres. Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

Price comparison

Price data powered by pricesAPI.io

Last updated at 08/28/2026 10:43:41

Chrono24.com.au

$1,999.00

Seiko S23631J1

Free delivery

Chrono24.com.au

$2,397.00

Seiko Prospex SBBN047 Ceramic Black 49mm

Delivery $170

Chrono24.com.au

$2,504.00

Seiko Prospex SBBN047 Steel Black 49.4mm 2024

Delivery $89

Chrono24.com.au

$2,710.00

Seiko Prospex S23631J1 Steel Black 49.4mm

Delivery $69

Chrono24.com.au

$2,736.00

Seiko Prospex SBBN047 Steel Black 49.4mm

Delivery $36

Chrono24.com.au

$2,764.00

Seiko Prospex SBBN047 Steel Black

Delivery $43

Chrono24.com.au

$2,792.00

Seiko Prospex SBBN047 Steel 49.4mm

Free delivery

Chrono24.com.au

$2,815.00

Seiko Prospex SBBN047 Titanium Black 49.4mm

Free delivery

Chrono24.com.au

$2,844.00

Seiko Prospex SBBN047 49.3mm

Delivery $268

Chrono24.com.au

$2,851.00

Seiko Prospex S23631J1 Titanium Black 49.4mm 2020

Delivery $171

Price history

Price history

Reviews

Quality plate for dual systems
15 January 2018chi-keung

originally posted on ebay.com

I got this originally on kickstarter with Peak Designs new v3 clip. These are my 2nd and 3rd plates for additional cameras. The dual plate works with both my old Manfrotto and new Arca Swiss tripod heads/clamps. One slight disadvantage is it can't mount in the v3 clip in all directions but that is a small price to pay for the convenience of compatibility with 2 tripod systems. Has solved my mounting issues without me having to replace all my clamps. Bit pricy but that is what you pay for quality, innovation and being a new product.

Review of Professional Divers 49.4mm Tuna Watch
11 November 2024Reviewed by Francis & Gaye Ltd customer

originally posted on francisandgaye.co.uk

A great watch, well built, comfortable to wear and looks great. Seiko do some fantastic watches never underestimate them.

Specification

Variant
titleDefault Title

Price comparison

Updated about 16 hours ago
Chrono24.com.au

$1,999.00

Seiko S23631J1

Free delivery

Chrono24.com.au

$2,397.00

Seiko Prospex SBBN047 Ceramic Black 49mm

Delivery $170

Chrono24.com.au

$2,504.00

Seiko Prospex SBBN047 Steel Black 49.4mm 2024

Delivery $89

Chrono24.com.au

$2,710.00

Seiko Prospex S23631J1 Steel Black 49.4mm

Delivery $69

Chrono24.com.au

$2,736.00

Seiko Prospex SBBN047 Steel Black 49.4mm

Delivery $36

Price history

Price history

Reviews

Quality plate for dual systems
15 January 2018

I got this originally on kickstarter with Peak Designs new v3 clip. These are my 2nd and 3rd plates for additional cameras. The dual plate works with both my old Manfrotto and new Arca Swiss tripod heads/clamps. One slight disadvantage is it can't mount in the v3 clip in all directions but that is a small price to pay for the convenience of compatibility with 2 tripod systems. Has solved my mounting issues without me having to replace all my clamps. Bit pricy but that is what you pay for quality, innovation and being a new product.

chi-keung originally posted on ebay.com
Review of Professional Divers 49.4mm Tuna Watch
11 November 2024

A great watch, well built, comfortable to wear and looks great. Seiko do some fantastic watches never underestimate them.

Reviewed by Francis & Gaye Ltd customer originally posted on francisandgaye.co.uk

Specification

Variant
titleDefault Title