San Martin SN0121TC Titanium NH34 GMT Diver 39mm

The San Martin SN0121TC Titanium NH34 GMT Diver 39mm was a 39 mm Grade 2 titanium dive watch with a Seiko NH34 automatic movement. It is no longer made, so this page is a reference for buying one used.

2 official photos · reader photos welcome

Price

$329

Material

Titanium

Grade / type

Grade 2

Water resistance

300 m

Type

Diver

Case diameter

39.0 mm

Origin

China

Movement

Automatic

Caliber

Seiko NH34

Complications

GMT, Date

Colour

Grey

Finish technology

Natural finish

Nickel-free

Unconfirmed (contact-point materials not all confirmed)

Dial

Black and blue colourways

Dial colours

Black Blue

Availability

No longer offered

Status

No longer offered. San Martin's own stores carry no SN0121TC (sanmartinwatches.com, 325 products, and sanmartin-watch.com, read 2026-10-12), and co-issuer watchdives.com no longer lists it among its 262 products, selling the titanium SN0121TF GMT instead, which reads as its successor. The authorised retailer sanmartinwatchstore.com still shows two SN0121TC listings, both sold out.

Not published

Reference, Thickness, Lug-to-lug, Weight, Power reserve, Hardness, Construction, Surface treatment, Caseback, Bracelet / strap, Matching bracelet, Crystal, Display back, Lume

High confidence Verified Jul 2026 Source: San Martin (maker)

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