The Wristwatch Field Guide

San Martin SN0111-T GR5 Diver

The San Martin SN0111-T GR5 Diver is a current-production diver watch with a grey grade 5 (caseback grade 2) case. It measures 40.0 mm across, 13.1 mm thick, 47.5 mm lug to lug, 103 g, and is water resistant to 300 m. Inside is the PT5000 / Sellita SW200 automatic movement, with ~38 h power reserve. Complications: Date. Priced from $389 (approx; $389 sale / $556 list). Brand origin: China.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
–
Type
Diver
Price
$389 · approx; $389 sale / $556 list
Case diameter
40.0 mm
Thickness
13.1 mm
Lug-to-lug
47.5 mm
Water resistance
300 m
Weight
103 g
Origin
China
Movement
Automatic
Caliber
PT5000 / Sellita SW200
Power reserve
~38 h
Complications
Date
Material
Titanium
Grade / type
Grade 5 (caseback Grade 2)
Colour
Grey
Hardness
–
Construction
–
Surface treatment
None; ceramic bezel; helium valve
Caseback
Titanium
Nickel-free
No (steel contact)
Bracelet / strap
Grade 5 titanium
Matching bracelet
–
Crystal
Sapphire, AR coated
Display back
No
Dial
Enamel black
Lume
Super-LumiNova BGW9
Availability
Offered
Status
Current
High confidence Verified Jul 2026 Source: San Martin (maker) Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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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 grey grade 5 (caseback grade 2) 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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