Thorn · Factory brand · China

Thorn SHY042

Ref. SHY042 · In production · Diver

Design reference: Seiko 62MAS (Prospex SPB143 generation)

Thorn SHY042 62MAS-style diver with blue-to-black gradient textured dial, date at 3 and black bezel on the steel bracelet
Photo: Thorn
  • Thorn SHY042 with red gradient textured dial and black bezel on the steel bracelet
  • Thorn SHY042 with textured black dial and black bezel on the steel bracelet
  • Thorn SHY042 with textured light blue dial and blue bezel on the steel bracelet
  • Thorn SHY042 with textured white dial and steel bezel on the steel bracelet
From $179
  • Seiko NH35A
  • 40 mm × 13.6 mm
  • Sapphire crystal
  • 200 m water resistance

Movement

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

Case

Diameter
40 mm
Lug to lug
47.8 mm
Thickness
13.6 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Display, screw-down
Bezel
Unidirectional, lumed

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
BGW9 Super-LumiNova (blue)

Bracelet

Bracelet
—

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street179 USD$1792026-10-30link

Price history

VariantConfigurationTypePriceUSDAs ofSource
All—Street169 USD$1692026-10-24link

Variants

NameDialBezel
Redtextured red gradientblack
Black Fade Bluetextured blue-to-black gradientblack
Blacktextured blackblack
Light Bluetextured light blueblue
Whitetextured whitesilver

About this entry

80% of key specs known. Missing: weight, hardening, bracelet offered.

Sold as the "40mm NH35A Diver" (the URL calls it the 40mm Marine 200 Master, a name Thorn also uses for the 42mm SHY019); the spec list gives the model as "Thorn SHY042", which is used as the name. Brand specs: Japan NH35A automatic, 316L case, screw-down 316L caseback with a sapphire display window, unidirectional bezel with lume dots (clicks and insert material not stated), sapphire with AR coating (side not stated), BGW9 blue lume, screw-down crown, 200m, 40mm without crown, 47.8mm lug-to-lug, 13.6mm thick (whether that includes the crystal is not stated), 20mm lugs. The photos show textured dials with a date at 3 and every colour on a steel bracelet, which the listing doesn't describe. Price $169 for all five dials. First listed on Thorn's store in August 2024.

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

Sources