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. It measures 44.8 mm across, 14.7 mm thick, and is water resistant to 300 m. Inside is the Seiko 5R65 spring drive movement, with 72 h power reserve. Complications: Power reserve. Priced from $6,500 (approx; maker page pending). Brand origin: Japan.

Titanium diver watches
ReferenceSNR031 / SBDB021
TypeDiver
Price$6,500 · approx; maker page pending
Case diameter44.8 mm
Thickness14.7 mm
Lug-to-lug–
Water resistance300 m
Weight–
OriginJapan
MovementSpring Drive
CaliberSeiko 5R65
Power reserve72 h
ComplicationsPower reserve
TitaniumTitanium (Super Titanium)
Surface treatmentDLC coating
Nickel-freeYes
Bracelet / strapSilicone strap
CrystalSapphire
Display backNo
DialBlack
LumeLumiBrite
AvailabilityOffered
StatusCurrent; maker page pending re-verification
Medium confidence Verified 2026-06-22 Source: aBlogtoWatch Maker / listing ↗
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