The Titanium Field GuidePicks of the month

Seiko Prospex LX Line SNR051

The Seiko Prospex LX Line SNR051 is a 44.8 mm Super Titanium watch with a Seiko 5R66 Spring Drive movement. On the maker's specification no steel touches the skin, so the guide lists it as nickel-free.

All Seiko watchesOther watchesPower reserveGMT
Price
$6,000
Material
Titanium
Grade / type
Titanium (Super Titanium)
Water resistance
100 m
Type
Other
Case diameter
44.8 mm
Thickness
14.7 mm
Origin
Japan
Movement
Spring Drive (GMT)
Caliber
Seiko 5R66
Power reserve
72 h
Complications
GMT, Date, Power reserve
Colour
Grey
Surface treatment
Super-hard coating
Finish technology
Surface hardening
Caseback
Titanium
Nickel-free
Maker states none
Bracelet / strap
Titanium
Crystal
Sapphire
Display back
No
Dial
Blue
Dial colours
Blue
Lume
LumiBrite
Availability
Offered
Status
Current
Not published
Reference, Lug-to-lug, Weight, Hardness, Construction, Matching bracelet
High confidence Verified Oct 2026 Source: Seiko Spec checksGrade Jul 2026Price Jul 2026
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Frequently asked questions

Is the Seiko Prospex LX Line SNR051 nickel-free?

On the maker's published specification, nothing that touches the skin is steel: the case, caseback, crown and bracelet with its clasp are all non-steel. The guide records what the maker publishes and has not tested the watch, so if you react to nickel, confirm the contact points with the maker before buying.

What grade of titanium is the Seiko Prospex LX Line SNR051?

The maker confirms titanium but does not publish a grade. The maker calls the material Super Titanium. The caseback is titanium too.

What size is the Seiko Prospex LX Line SNR051?

The case is 44.8 mm across and 14.7 mm thick. It is water resistant to 100 m.

How much does the Seiko Prospex LX Line SNR051 cost, and is it available?

It is in production, at a list price of $6,000.

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