The Titanium 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 $1,299 median for the category.

All Seiko watchesWatch diver watchesLightest, rankedPower reserve
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
Finish technology
DLC
Nickel-free
Unconfirmed (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 Sep 2026 Source: aBlogtoWatch Maker ↗ Spec checksGrade Sep 2026Price Jun 2026Weight Jun 2026
Facts are free to cite with a link.
Reader reviews & photosContribute photo or review
See it in the interactive guideGet new-watch alertsContribute a photo or review

Browse all watch comparisons →

Similar watches

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 sizeGrand Seiko Evolution 9 Spring Drive Diver 200m (SLGA015)Grand SeikoEvolution 9 Spring Drive Diver 200m (SLGA015)$12,60043.8 mm13.8 mm thick150 gDiversame category · same style · similar size · similar thicknessIslander Sands Point Titanium DiverIslanderSands Point Titanium Diver$44943.0 mm14 mm thick108 gDiversame category · same style · similar size · similar thicknessAquatico Super Marine TitaniumAquaticoSuper Marine Titanium$59944.0 mm15.5 mm thick85 gDiversame category · same style · similar size · similar thicknessWISE Diving 300M Gen 3 TitaniumWISEDiving 300M Gen 3 Titanium$61044.0 mm15.8 mm thickDiversame category · same style · similar size · similar thickness
TitanZero Hour Professional Diver 500m Titanium$84044.2 mm15.5 mm thickDiversame category · same style · similar size · similar thickness

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
TAG HeuerAquaracer Professional 300 Date Titanium (green)$4,95043.0 mmDiversame category · same style · similar price · similar sizeTudor Pelagos FXD (Marine Nationale, blue)TudorPelagos FXD (Marine Nationale, blue)$5,02542.0 mm12.75 mm thickDiversame category · same style · similar price · similar sizeTudor Pelagos FXDTudorPelagos FXD$5,02542.0 mm12.75 mm thick82 gDiversame category · same style · similar price · similar sizeU-Boat Profondo 10001 Limited EditionU-BoatProfondo 10001 Limited Edition$5,20046.0 mm27 mm thickDiversame category · same style · similar price · similar sizeTAG Heuer Aquaracer Professional 500 Date TitaniumTAG HeuerAquaracer Professional 500 Date Titanium$5,40042.0 mm120 gDiversame category · same style · similar price · similar size

More 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 Seiko watches · Watch diver watches · All 1,600 watches

Learn: Titanium grades · Surface treatments · Why titanium scratches · How to read a spec

How we verify & grade · Image & Trademark Policy · Terms & Conditions

Report an error on this page · how corrections work