The Wristwatch Field Guide

Omega Speedmaster X-33 Marstimer (Titanium)

318.90.45.79.01.003

The Omega Speedmaster X-33 Marstimer (Titanium) is a current-production pilot watch with a grey grade 2 case. It measures 45.0 mm across, 14.7 mm thick, 48 mm lug to lug, 112 g, and is water resistant to 30 m. Inside is the Omega Caliber 5622 quartz (thermocompensated, ana-digi) movement. Complications: Chronograph, GMT, Perpetual calendar, Date. Priced from $6,400 (MSRP). Brand origin: Switzerland.

Titanium and ceramic pilot watchesTitaniumGMTChronograph
Reference
318.90.45.79.01.003
Type
Pilot
Price
$6,400 · MSRP
Case diameter
45.0 mm
Thickness
14.7 mm
Lug-to-lug
48 mm
Water resistance
30 m
Weight
112 g (head only)
Origin
Switzerland
Movement
Quartz (thermocompensated, ana-digi)
Caliber
Omega Caliber 5622
Power reserve
Complications
Chronograph, GMT, Perpetual calendar, Date
Material
Titanium
Grade / type
Grade 2
Colour
Grey
Hardness
Construction
Surface treatment
None
Caseback
Titanium
Nickel-free
Yes
Bracelet / strap
Titanium bracelet and NATO
Matching bracelet
Standard
Crystal
Sapphire, AR coated
Display back
No
Dial
Black ana-digi, Mars-red bezel
Lume
Super-LumiNova
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: Monochrome Maker / listing ↗
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Frequently asked questions

Is the Omega Speedmaster X-33 Marstimer (Titanium) nickel-free?

Yes. Nothing nickel-bearing touches the skin: a grey grade 2 case with a titanium caseback, plus a non-steel crown and bracelet and clasp. The Wristwatch Field Guide marks it nickel-free for whole-watch skin contact. If your allergy is severe, confirm the contact points with the maker.

What is the case material of the Omega Speedmaster X-33 Marstimer (Titanium)?

The Omega Speedmaster X-33 Marstimer (Titanium) has a grey grade 2 case with a titanium caseback. This is confirmed against the maker spec.

What size is the Omega Speedmaster X-33 Marstimer (Titanium)?

It is 45.0 mm in diameter, 14.7 mm thick, 48 mm lug to lug, and water resistant to 30 m.

How much does the Omega Speedmaster X-33 Marstimer (Titanium) weigh?

About 112 g (head).

How much does the Omega Speedmaster X-33 Marstimer (Titanium) cost, and is it available?

It is current-production and lists from $6,400.

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