The Wristwatch Field Guide

Seiko Prospex LX Line SNR031

SNR031 / SBDB021

The Seiko Prospex LX Line SNR031 is a current-production diver watch with a titanium (super titanium) case, finished with dlc coating. At 110 g it sits around the middle for diver watches in the guide, and is priced well above the $1,199 median for the category.

All Seiko watchesExotic-material diver watchesTitaniumBlackDivers
Price
$6,500
Material
Titanium
Grade / type
Titanium (Super Titanium)
Weight
110 g (head only)
Water resistance
300 m
Reference
SNR031 / SBDB021
Type
Diver
Case diameter
44.8 mm
Thickness
14.7 mm
Origin
Japan
Movement
Spring Drive
Caliber
Seiko 5R65
Power reserve
72 h
Complications
Power reserve
Colour
Black
Surface treatment
DLC coating
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
Not published
Lug-to-lug, Hardness, Construction, Caseback, Matching bracelet
Medium confidence Verified Jun 2026 Source: aBlogtoWatch Maker ↗
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
No reviews yet.
See it in the interactive guideContribute a photo or review

Similar exotic-material watches

BallRoadmaster M Marvelight Bronze$3,49943.0 mm14.4 mm thickDiversame category · same style · similar price · similar size
RadoCaptain Cook High-Tech Ceramic$4,30043.0 mm14.6 mm thickDiversame category · same style · similar price · similar size
TudorBlack Bay Bronze$4,37543.0 mm14 mm thickDiversame category · same style · similar price · similar size
TAG HeuerAquaracer Professional 1000 Superdiver Titanium$6,60045.0 mm15.75 mm thickDiversame category · same style · similar price · similar sizeTudor Pelagos Ultra 1000MTudorPelagos Ultra 1000M$6,90043.0 mm14.5 mm thick117 gDiversame category · same style · similar price · similar size
Grand SeikoSpring Drive Diver 200m (SBGA231)$7,10044.0 mmDiversame category · same style · similar price · similar size
LonginesUltra-Chron Carbon$4,90043.0 mm80 gDiversame category · same style · similar price · similar sizeBremont Supermarine Full Ceramic Tactical BlackBremontSupermarine Full Ceramic Tactical Black$6,45043.0 mm13 mm thick74 gDiversame category · same style · similar price · similar size

Alternatives to the Seiko Prospex LX Line SNR031

Grand Seiko Evolution 9 Spring Drive Diver 200m Grand SeikoEvolution 9 Spring Drive Diver 200m "Ushio" (SLGA023)$9,60043.8 mmDiversame category · same style · shared complications · similar price
BallEngineer Hydrocarbon NEDU$4,89942.0 mm17.3 mm thickDiversame category · same style · similar price · similar size
Bell & RossBR 03-92 Diver Blue Bronze$4,90042.0 mmDiversame category · same style · similar price · similar size
Bell & RossBR 03-92 Diver Green Bronze$4,90042.0 mmDiversame category · same style · similar price · similar size
TAG HeuerAquaracer Professional 300 Date Titanium (green)$4,95043.0 mmDiversame category · same style · similar price · similar sizeBell & Ross BR 03-92 Diver White BronzeBell & RossBR 03-92 Diver White Bronze$4,99042.0 mmDiversame category · same style · similar price · similar size

More exotic-material watches from Seiko

Seiko Prospex Shogun Titanium (SPB191)SeikoProspex Shogun Titanium (SPB191)$1,20043.5 mm13.3 mm thick99 gDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB349)$1,50043.5 mmDiverSeiko Prospex SeikoProspex "Cave Diver" Shogun Titanium (SPB351)$1,50043.5 mmDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB357)$1,50043.0 mmDiverSeiko Prospex Marinemaster Professional 600m Titanium (SBDX067)SeikoProspex Marinemaster Professional 600m Titanium (SBDX067)$4,60045.4 mmDiverSeiko Prospex LX Line Spring Drive GMT Titanium (SNR035)SeikoProspex LX Line Spring Drive GMT Titanium (SNR035)$5,25044.8 mmOther

Frequently asked questions

What is the case material of the Seiko Prospex LX Line SNR031?

The Seiko Prospex LX Line SNR031 has a titanium (super titanium) case. It is recorded at medium confidence pending a maker-stated material.

What size is the Seiko Prospex LX Line SNR031?

It is 44.8 mm in diameter, 14.7 mm thick, and water resistant to 300 m.

How much does the Seiko Prospex LX Line SNR031 weigh?

About 110 g (head).

How much does the Seiko Prospex LX Line SNR031 cost, and is it available?

It is current-production and lists from $6,500.

All exotic-material Seiko watches · Exotic-material diver watches · All 1,957 watches

Learn: Which Material? · Lightest Materials · Most Scratch-Resistant · Materials and Skin

Image & Trademark Policy · Terms & Conditions