The Titanium Field Guide

San Martin SN0111-T GR5 Diver

The San Martin SN0111-T GR5 Diver is a current-production diver watch with a grade 5 (caseback grade 2) titanium case. At 103 g it sits around the middle for diver watches in the guide, and is priced well under the $1,299 median for the category.

All San Martin watchesWatch diver watchesUnder $500MicrobrandLightest, rankedGrade 5 titanium
Price
$389
Material
Titanium
Grade / type
Grade 5 (caseback Grade 2)
Weight
103 g
Water resistance
300 m
Type
Diver
Case diameter
40.0 mm
Thickness
13.1 mm
Lug-to-lug
47.5 mm
Origin
China
Movement
Automatic
Caliber
PT5000 / Sellita SW200
Power reserve
~38 h
Complications
Date
Colour
Grey
Surface treatment
None; ceramic bezel; helium valve
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
No (steel contact)
Bracelet / strap
Grade 5 titanium
Crystal
Sapphire, AR coated
Display back
No
Dial
Enamel black
Dial colours
Black
Lume
Super-LumiNova BGW9
Availability
Offered
Status
Current (between batches)
Not published
Reference, Hardness, Construction, Matching bracelet
High confidence Verified Aug 2026 Source: San Martin (maker) Maker ↗ Spec checksGrade Jul 2026Price Aug 2026 mediumWeight Jul 2026
Facts are free to cite with a link.
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Frequently asked questions

Is the San Martin SN0111-T GR5 Diver nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the San Martin SN0111-T GR5 Diver?

The San Martin SN0111-T GR5 Diver has a grade 5 (caseback grade 2) titanium case with a titanium caseback. This is confirmed against the maker spec.

What size is the San Martin SN0111-T GR5 Diver?

It is 40.0 mm in diameter, 13.1 mm thick, 47.5 mm lug to lug, and water resistant to 300 m.

How much does the San Martin SN0111-T GR5 Diver weigh?

About 103 g.

How much does the San Martin SN0111-T GR5 Diver cost, and is it available?

It is current-production and lists from $389.

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