Seiko Prospex Marinemaster Tuna 1000m SBBN047

The Seiko Prospex Marinemaster Tuna 1000m SBBN047 is a current-production diver watch with a Titanium (Super Titanium) case, finished with dia-shield; ceramic shroud. At 119 g it sits around the middle for diver watches in the guide, and is priced well above the $1,300 median for the category.

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2 official photos · reader photos welcome

Price

$3,500

Titanium

Titanium (Super Titanium)

Weight

119 g (head only)

Water resistance

1000 m

Reference

SBBN047 / S23631

Type

Diver

Case diameter

49.4 mm

Thickness

16.3 mm

Origin

Japan

Movement

Quartz

Caliber

Seiko 7C46

Power reserve

5 years

Complications

Day-date

Case shape

Round

Case colour

Natural / grey

Finish technology

Surface hardening

Surface treatment

Dia-Shield; ceramic shroud

Nickel-free

Not verified (contact-point materials not all confirmed)

Bracelet / strap

Silicone strap

Crystal

Sapphire

Display back

No

Dial

Black

Dial colours

Black

Lume

LumiBrite

Availability

Offered

Status

Current (JDM); maker titanium token pending re-verification

Not published

Lug-to-lug, Caseback, Titanium bracelet Help verify

Medium confidence Verified Jun 2026 Source: Gnomon Watches Maker / listing ↗

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