The quick answer.
Thorn Watches SHY037 Titanium NH34 GMT Diver is a 40.5 mm gmt diver watch at $229. We recommend it for a traveller or diver-style fan who wants a lightweight titanium GMT automatic at an accessible price.
Why it belongs on the shortlist.
A true GMT tracks a second time zone with its own hand, and THORN lists the hand as independently adjustable. Combined with a titanium case and bracelet, which is lighter than steel, it is a travel-and-dive watch that costs less than most entry GMT automatics.
Our verdict: a lot of GMT for the money.
Most GMT automatics start higher, and few at this price use titanium throughout. For $229 THORN lists the proven NH34A movement, sapphire, a ceramic bezel with a 24-hour scale and a 300 m rating, which is why we would shortlist it if you travel or like dive-watch styling.
What the GMT does.
The NH34A has a fourth hand that can be set independently to a second time zone, so you can read home time while the main hands show local time. Our guide to GMT watches explains how that works and how a 24-hour bezel adds a third zone.
Check the full footprint.
THORN lists a 40.5 mm diameter, 48 mm lug-to-lug span and 14 mm thickness. The titanium keeps the weight down, but the length and thickness deserve a fit check; our guide to watch size explains how to compare.
Titanium, water rating and care.
THORN lists a solid screw-down titanium case back and a helium escape valve, and gives a 300 m / 30 ATM rating. Our guide to water resistance explains what that means for swimming and daily use, and our case-materials guide covers titanium versus steel.
The details, at a glance.
- Selected variant
- SHY037 · Variant 47278077903156
- Case diameter
- 40.5 mm
- Lug-to-lug
- 48 mm
- Thickness
- 14 mm
- Lug width
- Not published by the brand
- Case
- Titanium case and bracelet
- Crystal
- Double-domed sapphire crystal with anti-reflective coating
- Movement
- Seiko NH34A automatic GMT
- Listed functions
- Hours, minutes, seconds, date and an independently adjustable GMT hand
- Water resistance
- 300 m / 30 ATM, helium escape valve
- Strap / bracelet
- Titanium bracelet, quick-release, folding clasp with micro-adjustment holes
What draws us in
- Titanium case and bracelet with a quick-release system
- Seiko NH34A automatic GMT with an independently adjustable GMT hand
- Sapphire crystal, ceramic bezel and a 300 m / 30 ATM manufacturer rating
Before you choose
At 40.5 mm wide, 48 mm lug-to-lug and 14 mm thick it is a substantial watch, and THORN does not publish a rated power reserve or an ISO dive certification. Check the span against your wrist.
Who it suits.
A traveller or diver-style fan who wants a lightweight titanium GMT automatic at an accessible price.
When to choose something else.
Choose a thinner, shorter watch if you want a low-profile fit, or a certified dive watch if certification is a purchase requirement.
Warranty, returns and ownership.
THORN’s listing states a 2-year international warranty and customer repair support. We did not find product-specific return terms in the listing, so check THORN’s current warranty and return conditions before ordering.
Closest alternatives.
- BODERRY Admiral GMT Black: A 40 mm titanium GMT diver with a 200 m rating and a TMI NH34 at a higher price.
- BODERRY Landmaster GMT (Yellow Dial): A 38 mm titanium field GMT if you prefer a smaller, non-diver design.
- Citizen Promaster Skyhawk A-T GMT Blue Dial (JY8125-54L): A solar atomic GMT pilot watch if you prefer no winding.
Think beyond the diameter.
The published 48 mm lug-to-lug gives you a useful starting point for checking overhang. Use our wrist-fit guide and compare the proportions with a watch you already enjoy wearing.
Thorn Watches partner code and offer terms. Our supplied code is SEBASTIANBASSOL for $5 off. Check the exact model and variant at the store, then confirm eligibility and the final total at checkout.
Where to buy.
Specifications and product photography: THORN Watches product page (checked October 17, 2026). Find SHY037 Titanium NH34 GMT Diver at Thorn Watches through our partner link and search for the selected option there. How we choose.
A few good questions.
What is the discount code for the Thorn Watches SHY037 Titanium NH34 GMT Diver?
The Thorn Watches discount code is SEBASTIANBASSOL for $5 off at thornwatches.com. We have not tested it on this exact model, so confirm the saving in your order summary. Every code and tested price: https://watchritual.com/promo/thorn-watches
How much is the Thorn Watches SHY037 Titanium NH34 GMT Diver?
THORN listed the SHY037 at $229 USD on October 17, 2026. THORN’s supplied code SEBASTIANBASSOL gives $5 off on tested products; confirm it applies to this exact watch at checkout.
Is the Thorn Watches SHY037 Titanium NH34 GMT Diver a true GMT?
THORN lists a Seiko NH34A automatic GMT with an independently adjustable GMT hand and a 24-hour bezel scale.
What size is the Thorn Watches SHY037 Titanium NH34 GMT Diver?
THORN lists a 40.5 mm diameter, 48 mm lug-to-lug span and 14 mm thickness, with a titanium case and bracelet.
How water resistant is the Thorn Watches SHY037 Titanium NH34 GMT Diver?
THORN lists 300 m / 30 ATM with a screw-down titanium case back and a helium escape valve. THORN does not state an ISO dive certification.
