Oak & Oscar · Microbrand · United States

Oak & Oscar Humboldt GMT

In production · GMT, Sport

Oak & Oscar Humboldt GMT, navy sandwich dial and steel 24-hour bezel, on steel bracelet
Photo: Oak & Oscar
  • Oak & Oscar Humboldt GMT, white dial and steel 24-hour bezel, on steel bracelet
  • Oak & Oscar Humboldt GMT, black sandwich dial and steel 24-hour bezel, on steel bracelet
  • Oak & Oscar Humboldt GMT USSS Edition, navy dial and BRAVO bezel, on steel bracelet
  • Oak & Oscar Humboldt GMT USSS Edition, solid caseback engraved with the Secret Service emblem
  • Oak & Oscar Humboldt GMT 2026 Chicago Edition, black dial and black 24-hour bezel, on steel bracelet
  • Oak & Oscar Humboldt GMT 2026 Chicago Edition on bracelet, angled
  • Oak & Oscar Humboldt GMT 2026 Chicago Edition, solid caseback with Chicago-themed engraving
From $2,175 to $2,375
  • 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
Steel (316L)
Hardening
—
Water resistance
200 m
Crown
—
Case back
Solid
Bezel
Bidirectional, 120 clicks, 24-hour GMT
Finishing
Brushed

Crystal & dial

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

Bracelet & clasp

Style
—
Links per row
—
Solid end links
Yes
Solid links
—
Link attachment
—
Taper
20 → 16 mm
Quick release
—
Half links
—
Clasp
—
Micro-adjust
On-the-fly, "Quick-adjust clasp", 6 positions
Diver extension
—

Straps

Strap 1
Nylon, 20mm nylon strap, included (olive drab with orange stitching and signed hardware; grey with navy stitching and "1865" engraving on the USSS Edition)

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Whitebracelet and nylon strapMsrp2,175 USD$2,1752026-10-24link
Navybracelet and nylon strapMsrp2,175 USD$2,1752026-10-24link
Blackbracelet and nylon strapMsrp2,175 USD$2,1752026-10-24link
2026 Chicago EditionbraceletMsrp2,350 USD$2,3502026-10-24link
USSS Editionbracelet and nylon strapMsrp2,375 USD$2,3752026-10-24link
USSS Editionbracelet and nylon strapSale1,975 USD$1,9752026-10-24link

Variants

NameReferenceDialBezelStatus
WhiteHMBDLTGMTWHTBwhiteSteel 24-hour bezelIn production
NavyHMBDLTGMTNVYBnavySteel 24-hour bezelIn production
BlackHMBDLTGMTBLKBblackSteel 24-hour bezelIn production
2026 Chicago EditionHUMGMT26BLKblackBlack PVD 24-hour bezel insertLimited (5)
USSS EditionHMBDLTGMTUSSS01navyBRAVO 24-hour bezelIn production

About this entry

74% of key specs known. Missing: weight, hardening, crown, bracelet links, link attachment.

Brand specs (2026 Chicago Edition page): 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; brushed 316L case of 39.5mm with a 40.0mm bezel (40mm recorded), 12.5mm case height (whether the crystal is included isn't stated), 46.8mm lug-to-lug, 20mm lugs, 200m; 24-hour, 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. Bracelet: fully articulated links tapering from 20mm solid end links to 16mm, 7 removable links, six-position quick-adjust locking clasp that the brand says needs no tools "to adjust the fit on the fly" (fits 160-231mm wrists). The standard colourways were orderable on the brand's store on 2026-10-25. 2026 Chicago Edition (listed July 2026): made for Chicago Windup, five pieces, black dial, black PVD bezel insert, Chicago-themed caseback engraving, on the bracelet; sold out. Standard colourways (White, Navy, Black; listed February 2022): the product page gives the same specs, $2,175 on the bracelet with an olive drab nylon strap; the bracelet fits 142-231mm wrists. USSS Edition (September 2022): a private listing for United States Secret Service team members, navy dial with the "BRAVO" bezel, Secret Service emblem and "Worthy of Trust and Confidence" engraved on the caseback, grey nylon strap with navy stitching and "1865" engraving; the store shows a limited-time $1,975 against a $2,375 compare-at price and limits orders to two; same specs as the standard watch; orderable on 2026-10-25. The titanium Humboldt GMT and its SAR Edition are a separate model.

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

Sources