Thorn · Factory brand · China

Thorn SHY037 (NH34)

Ref. SHY037 · In production · Diver, GMT

Design reference: Rolex Yacht-Master (titanium)

From $229
  • Seiko NH34A
  • 40.5 mm × 14 mm
  • Sapphire crystal
  • 300 m water resistance

Where to buy

Movement

Type
Automatic
Tier
Entry
Complications
Date, GMT
Frequency
21,600 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
40.5 mm
Lug to lug
48 mm
Thickness
14 mm
Lug width
—
Material
Titanium
Hardening
—
Water resistance
300 m
Crown
—
Case back
Solid, screw-down
Bezel
Unidirectional, ceramic insert
Helium valve
Yes

Crystal & dial

Crystal
Sapphire
Shape
Double-domed
Anti-reflective
Yes (side not stated)
Lume
—

Bracelet & clasp

Style
—
Links per row
—
Solid end links
—
Solid links
—
Link attachment
—
Taper
—
Quick release
Yes
Half links
—
Clasp
—
Micro-adjust
Tool (pin holes)
Diver extension
—

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street229 USD$2292026-10-24link

About this entry

58% of key specs known. Missing: lug width, weight, hardening, crown, lume, bracelet links, end links, link attachment.

Titanium GMT diver with a helium escape valve and "Titanium-Yacht" on the dial. Thorn uses the code SHY037 (title, spec list and SKU) both for this NH34 GMT and for a no-date NH35 titanium Submariner-style diver in the same 40.5mm x 48mm x 14mm, 300m case, published as SHY037 (NH35). Brand specs: Seiko NH34A automatic GMT (hours, minutes, seconds, date, GMT), titanium case (grade not stated), solid screw-down titanium caseback, unidirectional ceramic bezel, double-domed sapphire with AR coating (side not stated), 300m, helium escape valve, "high-visibility luminous dial" (lume grade not stated), titanium bracelet with quick-release system, folding clasp with micro-adjustment holes, 40.5mm, 48mm lug-to-lug, 14mm thick (whether that includes the crystal is not stated). The text gives the bezel a 24-hour GMT scale, but the photos show a 60-minute bezel with the 24-hour scale on the dial's inner ring, so the bezel scale is left out. Crown type and lug width are not stated. Price $229 (crossed-out $259). First listed on Thorn's store in December 2023.

Last verified: 2026-10-25. Edit or correct this entry.

Sources