Oak & Oscar · Microbrand · United States

Oak & Oscar Humboldt GMT Titanium

Limited · 2023 · GMT, Sport

Oak & Oscar Humboldt GMT Titanium, green sandwich dial and titanium 24-hour bezel, on brown Horween leather strap
Photo: Oak & Oscar
  • Oak & Oscar Humboldt GMT SAR Edition, blue dial and blue ceramic compass bezel, on orange rubber strap
  • Oak & Oscar Humboldt GMT SAR Edition, engraved solid caseback
From $2,250 to $2,350
  • Sellita SW330-2
  • 40 mm × 12.5 mm
  • Sapphire crystal
  • 200 m water resistance

Movement

Type
Automatic
Tier
Upper
Complications
Date, GMT
Frequency
28,800 bph
Power reserve
56 h
Hacking
Yes
Accuracy (factory)
—
Modifications
Oak & Oscar four-star rotor; colour-matched date wheel with the date at 6

Case

Diameter
40 mm
Lug to lug
46.8 mm
Thickness
12.5 mm
Lug width
20 mm
Material
Titanium (Grade 5)
Hardening
—
Water resistance
200 m
Crown
—
Case back
Solid
Bezel
Bidirectional, 120 clicks

Crystal & dial

Crystal
Sapphire
Shape
Double-domed
Anti-reflective
Yes (side not stated)
Lume
Super-LumiNova BGW9 (sandwich dial)

Bracelet

Bracelet
Not offered

Straps

Strap 1
Rubber, Oak & Oscar 20mm rubber strap with topographic ventilation channels and titanium buckle (both variants)
Strap 2
Leather, 20mm Horween leather strap tapering to 18mm, titanium buckle (Titanium green)
Strap 3
Canvas, 20mm canvas strap with titanium buckle (SAR Edition)

Weight

Head only
—
On bracelet
—
On strap
74 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
GreenHorween leather and rubber strapsMsrp2,250 USD$2,2502026-10-24link
SAR Editionrubber and canvas strapsMsrp2,350 USD$2,3502026-10-24link

Variants

NameReferenceDialBezelStatus
GreenHMBDLTGMTTiGRNBgreenTitanium 24-hour bezelLimited
SAR EditionHMBDLTGMTSARBWCAblueLumed blue ceramic compass bezel insertLimited (50)

About this entry

87% of key specs known. Missing: hardening, crown.

The Humboldt GMT in a Grade 5 titanium case and bezel (the steel Humboldt GMT is a separate model). Brand specs, the same on both listings: Sellita SW330 with independently set 24-hour hand, quick-set date, 25 jewels (the brand quotes 56h), four-star rotor behind a solid caseback; anti-magnetic enclosure and anti-shock bumper; 39.5mm case with a 40.0mm bezel (40mm recorded), 12.5mm case height (whether the crystal is included isn't stated), 46.8mm lug-to-lug, drilled 20mm lugs, 200m; 120-click bidirectional bezel on ceramic ball bearings; double-domed sapphire with "multi-layer anti-reflective coating" (side not stated); sandwich dial with BGW9; colour-matched date at 6. Titanium (Green), listed October 2023: green dial, titanium 24-hour bezel, the brand says 74 grams on the Horween leather strap and 20% lighter than the steel Humboldt GMT; tagged "Limited Production", not numbered; delivered on Horween leather and the brand's new rubber strap; sold out on 2026-10-25. SAR Edition (November 2024): made with the St. Louis County Rescue Squad (Minnesota), limited to 50, blue dial, lumed ceramic compass bezel insert, BWCA SAR caseback engraving, on orange rubber and canvas straps; part of the profits donated to the squad; sold out within days.

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

Sources