Jack Mason Strat-O-Timer Titanium Diver GMT
The Jack Mason Strat-O-Timer Titanium Diver GMT is a current-production diver watch with a grade 2 titanium case, finished with hardness coating. At 118 g it sits around the middle for diver watches in the guide, and is priced above the $1,199 median for the category. Nothing touching the skin is nickel-bearing steel, verified across the case, caseback and bracelet.


- Reference
- Strat-O-Timer Titanium GMT
- Type
- Diver
- Case diameter
- 40.0 mm
- Thickness
- 13.2 mm
- Lug-to-lug
- 47 mm
- Origin
- United States
- Movement
- Automatic
- Caliber
- Miyota 9075
- Power reserve
- 42 h
- Complications
- GMT, Date
- Colour
- Grey
- Surface treatment
- Hardness coating
- Caseback
- Titanium
- Nickel-free
- Yes
- Bracelet / strap
- Grade 2 titanium bracelet; FKM Tropic strap
- Matching bracelet
- Standard
- Crystal
- Sapphire
- Display back
- No
- Dial
- Anthracite, cobalt, black
- Dial colours
- Black Grey Blue
- Lume
- Super-LumiNova BGW9
- Availability
- Offered
- Status
- Current (between batches, restock estimated September)
- Not published
- Hardness, Construction
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Frequently asked questions
Is the Jack Mason Strat-O-Timer Titanium Diver GMT nickel-free?
Yes. Nothing nickel-bearing touches the skin: a grade 2 titanium case with a titanium caseback, plus a non-steel crown and strap. 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 Jack Mason Strat-O-Timer Titanium Diver GMT?
The Jack Mason Strat-O-Timer Titanium Diver GMT has a grade 2 titanium case with a titanium caseback. This is confirmed against the maker spec.
What size is the Jack Mason Strat-O-Timer Titanium Diver GMT?
It is 40.0 mm in diameter, 13.2 mm thick, 47 mm lug to lug, and water resistant to 200 m.
How much does the Jack Mason Strat-O-Timer Titanium Diver GMT weigh?
About 118 g.
How much does the Jack Mason Strat-O-Timer Titanium Diver GMT cost, and is it available?
It is current-production and lists from $1,399.
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